BOSCH GMS 120-27 Professional Multi Detector Instruction Manual

: July 31, 2024
: Bosch

Table of Contents

BOSCH GMS 120-27 Professional Multi-Detector
Usage Instructions
Safety Instructions
Product Description and Specifications
Technical data
Measuring Tool Power Supply
- Operation
Errors – Causes and Corrective Measures
Maintenance and Service
FAQ
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

BOSCH GMS 120-27 Professional Multi-Detector

Specifications:

Brand : Bosch Power Tools
Model : GMS 120-27 Professional
Dimensions : 120mm x 100mm x 50mm
Weight : 90% without Li-Ion battery pack
Power Supply : 5.0V, 500mA

Product Description
The Bosch GMS 120-27 Professional is a high-quality measuring tool designed for detecting objects such as non-magnetic metals like copper pipes and magnetic metals like reinforcement steel.

Usage Instructions

Charging the Li-Ion Battery Pack:

Use the recommended USB power adapter or one that meets the voltage and current requirements specified in the technical data section.
Check the color of the charging indicator (yellow for charging, red for unsuitable voltage or current).

Operating with Batteries/Accus:

Startup:

Ensure the sensor area is dry before turning on the device. Wipe it with a cloth if necessary.
If the device experiences extreme temperature changes, let it adjust to the ambient temperature before turning it on.

Functionality:
The type of detected object will be displayed on the screen: (h) non-magnetic metal like copper pipes, (g) magnetic metal like reinforcement steel.

Safety Instructions

All instructions must be read and observed. The safeguards integrated into the measuring tool may be compromised if the measuring tool is not used in accordance with these instructions.

STORE THESE INSTRUCTIONS IN A SAFE PLACE.

Have the measuring tool repaired only by a qualified specialist using only original replacement parts. This will ensure that the safety of the measuring tool is maintained.
Do not use the measuring tool in explosive atmospheres that contain flammable liquids, gases or dust. Sparks may be produced inside the measuring tool, which can ignite dust or fumes.
Do not modify or open the battery. There is a risk of short-circuiting.
In case of damage and improper use of the battery, vapors may be emitted. The battery can set alight or explode. Ensure the area is well-ventilated and seek medical attention should you experience any adverse effects. The vapours may irritate the respiratory system.
If used incorrectly or if the battery is damaged, flammable liquid may be ejected from the battery. Contact with this liquid should be avoided. If contact accidentally occurs, rinse off with water. If the liquid comes into contact with your eyes, seek additional medical attention. Liquid ejected from the battery may cause irritation or burns.
The battery can be damaged by pointed objects such as nails or screwdrivers or by force applied externally. An internal short circuit may occur, causing the battery to burn, smoke, explode or overheat.
When the battery is not in use, keep it away from paper clips, coins, keys, nails, screws or other small metal objects that could make a connection from one terminal to another. A short circuit between the battery terminals may cause burns or a fire.
Only use the battery with products from the manufacturer. This is the only way in which you can protect the battery against dangerous overload.
Only charge the batteries using chargers recommended by the manufacturer. A charger that is suitable for one type of battery may pose a fire risk when used with a different battery. Protect the battery against heat, e.g. against continuous intense sunlight, fire, dirt, water and moisture. There is a risk of explosion and short-circuiting.
The measuring tool may not be 100 % accurate for technological reasons. To eliminate hazards, familiarise yourself with further sources of information, such as building plans and photographs taken during construction, etc. before carrying out any drilling, sawing or routing work on walls, ceilings or floors. Environmental influences, such as humidity, or proximity to devices that generate strong electric, magnetic or electromagnetic fields, moisture, metallic building materials, foillaminated insulation materials or conductive wallpaper or tiles may impair the accuracy of the measuring tool. The number, type, size and position of the objects may distort the measuring results.
If there are gas pipes in the building, check to ensure that none of them have been damaged after completing any work on walls, ceilings or floors.
When attaching objects to dry walls, and in particular when attaching them to the substructure, check to ensure that both the wall and the fastening materials have a sufficient load-bearing capacity.

Safety instructions for power supply

This power supply is not intended for use by children or persons with physical, sensory or mental limitations or a lack of experience or knowledge.
This power supply can be used by children aged 8 or older and by persons who have physical, sensory or mental limitations or a lack of experience or knowledge if a person responsible for their safety supervises them or has instructed them in the safe operation of the power supply and they understand the associated dangers. Otherwise, there is a risk of operating errors and injuries.

Do not expose the power supply to rain or wet conditions. Water entering the power supply will increase the risk of electric shock.

Keep the power supply clean. Dirt poses a risk of electric shock.
Always check the power supply before using it. Stop using the power supply if you discover any damage. Do not open the power supply yourself, and have it repaired only by Bosch or by an authorised after-sales service centre using only original replacement parts. Damaged power supplies increase the risk of an electric shock.

Product Description and Specifications

Please observe the illustrations at the beginning of this operating manual.

Intended Use
The measuring tool is intended for the detection of metal (ferrous and non- ferrous metals, e.g. reinforcing steel), wooden beams and live wires in walls, ceilings and floors. The measuring tool is suitable for indoor and outdoor use.

Product Features
The numbering of the product features shown refers to the illustration of the measuring tool on the graphic page.

Light-up ring
Marking hole
Display
Metal/electricity button
Wood button
Audio signal button
On/off button
Gripping surface
Protective bag
USB Type-C® cable)b)
Lithium-ion battery pack locking mechanism)
Lithium-ion battery packs)
USB Type-C® porta)
Charge indicator of the battery pack)
The locking mechanism of the battery compartment cover
Battery compartment cover
Sensor area
Contact pads
Serial number
This accessory is not part of the standard scope of delivery.
USB Type-C® and USB-C® are trademarks of USB Implementers Forum.

Display Elements (see Figure A)

Object centre indicator
Measuring indicator
Audio signal status indicator
Battery charge indicator
Non-metallic object indicator
Live cable indicator
Magnetic metal indicator
Non-magnetic metal indicator
Radio interference indicator
Warning indicator
Temperature monitoring indicator

Technical data

Depends on material and size of the objects, as well as material and condition of the substrate
For a copper pipe with a 15 mm diameter
For reinforcing steel with a 12 mm diameter
Lower detection depth with non-live wires
For wooden beams with a width of 54 mm, behind 30 mm thick plasterboard
Only non-conductive deposits occur, whereby occasional temporary conductivity caused by condensation is expected.
Weight without lithium-ion battery pack/non-rechargeable batteries/rechargeable batteries/battery compartment cover
For additional technical data, visit:https://www.bosch-professional.com/ecodesign

The serial number (19) on the type plate is used to clearly identify your measuring tool.
The accuracy and detection depth of the measuring result may be negatively affected if the condition of the substrate is unfavorable.

Measuring Tool Power Supply

The measuring tool can be operated either with a Bosch lithium-ion battery pack (12), with commercially available non-rechargeable batteries or with commercially available NiMH rechargeable batteries.

Note : Never store the measuring tool without an inserted battery compartment cover (16) or lithium-ion battery pack (12), particularly in dusty or humid environments. The battery charge indicator (d) will indicate the state of charge of the lithium-ion battery pack (12), non-rechargeable batteries or NiMH batteries on the display.

Operation with Lithium-Ion Battery Pack: Inserting/Replacing a Lithium- Ion Battery Pack
To switch from non-rechargeable or NiMH batteries to a lithium-ion battery pack (12), press on the locking mechanism (15) of the battery compartment cover. Remove the battery compartment cover (16) and the inserted non- rechargeable or rechargeable batteries.

Insert the lithium-ion battery pack (12) and let the locking mechanism (11) click into place. To remove the lithium-ion battery pack (12), press the locking mechanism (11) and take the lithium-ion battery pack out of the measuring tool.

Charging a Lithium-Ion Battery Pack

For charging, use the recommended USB power supply unit or a USB power supply unit whose output voltage and minimum output current comply with the requirements in the “Technical Data” section. Observe the operating manual of the USB power supply unit. Recommended power supply unit: See “Technical Data”.
Pay attention to the mains voltage. The voltage of the power source must match the voltage specified on the type plate of the power supply.
Only use the USB connection to charge the battery at an ambient temperature of between +10 °C and +35 °C. Charging outside of this temperature range can damage the battery and increase the risk of fire.

Note : Lithium-ion rechargeable batteries are supplied partially charged according to international transport regulations. To ensure full rechargeable battery capacity, fully charge the rechargeable battery before using your tool for the first time. Open the flap for the USB Type-C® port (13). Connect the USB port to a USB power supply unit using the USB cable (10). Connect the USB power supply unit to the main supply.

It is not possible to take measurements during the charging process because the measuring tool cannot be fully placed on the surface. Remove the USB cable (10) after completing the charging process. Close the flap for the USB Type-C® port (13) to protect it from dust and splashes.

Operation with Batteries/Rechargeable Batteries
To switch from a lithium-ion battery pack (12) to non-rechargeable/NiMH batteries, remove the lithium-ion battery pack (12). Using alkali-manganese non-rechargeable batteries or NiMH rechargeable batteries is recommended for operation of the measuring tool. Insert the non-rechargeable batteries/rechargeable batteries. When inserting the batteries, ensure that the polarity is correct according to the illustration on the inside of the battery compartment. Insert the battery compartment cover (16) and let it click into place. Always replace all the batteries at the same time. Only use batteries from the same manufacturer and which have the same capacity.

Take the batteries out of the measuring tool when you are not using it for a prolonged period of time. The batteries can corrode during prolonged storage in the measuring tool.

Operation

Protect the measuring tool from moisture and direct sunlight.
Do not expose the measuring tool to any extreme temperatures or variations in temperature. In case of large variations in temperature, leave the measuring tool to adjust to the ambient temperature before switching it on. The accuracy of the measuring tool and the functionality of the display may be compromised if exposed to extreme temperatures or variations in temperature.
Avoid hard knocks to the measuring tool or dropping it. After severe external influences and in the event of abnormalities in the functionality, you should have the measuring tool checked by an authorised Bosch after-sales service agent.
Hold the measuring tool by the intended gripping surface (8) only, so as not to influence the measurement.
Do not attach any stickers or labels to the sensor area (17) on the rear of the measuring tool. Metal labels in particular will affect measuring results.

Do not wear gloves when taking measurements and make sure that you are properly earthed. If you are not properly earthed, the identification of live wires may be impaired. When taking measurements, avoid getting close to devices that emit strong electric, magnetic or electromagnetic fields, such as mobile telephones, laptops or tablets. If possible, deactivate all tools whose radiation could interfere with the measurement and switch off the corresponding functions or tools.

Starting Operation

Switching on/off
- Before switching on the measuring tool, ensure that the sensor area (17) is dry. If necessary, use a cloth to dry the measuring tool.
- If the measuring tool has been exposed to a significant change in temperature, leave it to adjust to the ambient temperature before switching it on.
To switch on the measuring tool, press the on/off button (7).
To switch off the measuring tool, press the on/off button (7) again.
If no button on the measuring tool is pressed for approx. 5 minutes and no objects are detected, the measuring tool will automatically switch off. Switching audio signal on/off
The audio signal can be switched on or off with the audio signal button (6). When the audio signal is switched off, the audio signal status indicator (c) will appear on the display.

How it works (see figure B)
The measuring tool checks the base material of the sensor area (17) in the measurement direction A up to the maximum detection depth. Metal objects (e.g. copper pipe or reinforcing steel) and live cables (50–60 Hz) are automatically searched for during each measurement. The metal/electricity button (4) will light up to provide confirmation. To also search for wood in dry walls, press the wood button (5). This function is confirmed by the wood button (5) lighting up. To switch off the wood detection function, press either the wood button (5) or the metal/electricity button (4) so that the wood button (5) turns off.

Note : Only switch on the wood detection function for searching in dry walls with a
wooden substructure. On other surfaces, the measurement result may be impaired.

Measuring Process (see figure C)
Position the measuring tool on/against the surface being inspected. The light- up ring (1) will light up to indicate readiness to measure. Hold the measuring tool uniformly by the gripping surface (8). Do not change your grip during the measurement and, in particular, do not touch the sensor area (17). Always move the measuring tool in a straight line in direction B over the surface, applying light pressure, without lifting it off or changing the pressure. The measuring tool should primarily be moved transversely to the object you are searching for. If you do not know how the object is aligned in the wall, perform a cross measurement (see figure C). Important information for locating steel reinforcement: The measuring tool first needs to detect that it is a substrate with a meshed steel reinforcement. To do this, move the measuring tool in a circular motion (> 30 cm diameter) over the substrate before taking the actual measurement. Once this is done, do not lift the measuring tool off the substrate then perform the measurement as usual. Ideally, the measurement should pass over an intersection point and a single mesh of the steel reinforcement.

Detection Indicators:

If no object is detected below the sensor area, the light-up ring (1) will light up green. The measuring indicator (b) is empty and no audio signal will sound.
When the measuring tool approaches an object, the light-up ring (1) will light up red. As the measuring tool gets closer, the amplitude in the measuring indicator (b) will increase and the audio signal will sound more quickly.
Above the centre of an object, the measuring indicator (b) will indicate the maximum amplitude of the measurement, the object centre indicators (a) will light up and an audio signal will sound. The light-up ring (1) will continue to light up red.
When the measuring tool moves away from the object, the object centre indicators (a) will turn off, the amplitude in the measuring indicator (b) will decrease and the audio signal will sound more slowly.

Objects are only displayed roughly the first time you move over the centre and boundaries of the object. In order to then locate the exact centre of an object, move the measuring tool back in the \direction of the object without lifting it off until the object centre is indicated again (the object centre indicators (a) will light up). In order to locate the boundaries of the object with greater precision, continue to move the measuring tool in a straight line from the object’s centre until the light-up ring (1) is no longer lit up red. The marking hole (2) is located above the central measuring point. If necessary, you can use this to mark the centre or boundaries of the object.

Note : After you have marked an object through the marking hole (2) (e.g. with a pencil), you will need to start a new measurement because the measurement may be impaired by the pencil.

The type of object found is indicated on the display:

Information about Detecting Live Cables

The cable must be live. You should therefore connect electricity consumers (e.g. lights, appliances) to the electricity cable you are trying to find. Switch on the electricity consumers to ensure that the electricity cable is live.
The 50–60 Hz signal from the electricity cable must be able to reach the measuring tool. If the cable is in damp walls (e.g. > 50 % humidity), behind metallic foil (e.g. thermal insulation) or in an empty metal pipe, the signal will not reach the measuring tool and you will not be able to find the cable.
The measuring tool must be sufficiently earthed. To do this, hold it firmly (without gloves) by the gripping surface (8). Make sure that you are in good contact with the floor. Insulating shoes, ladders or platforms may compromise your contact with the floor. The floor must also be earthed in order for live cables to be detected.
The 50–60 Hz signal from the electricity cable must be stronger along the cable than in its immediate vicinity. If the wall is very damp or poorly earthed, the signal will be the same strength throughout the wall. This will result in the measuring tool indicating that it has found a signal over a large area, but it will not be able to detect the exact location of the cable. In this instance, it may be helpful to place your free hand on the wall 20–30 cm from the measuring tool in order to conduct the signal away from the wall. However, you should not change the position of your free hand during the measuring process.
Multi-phase (known as three-phase current or heavy current) electricity cables cannot be detected as live cables because the signals from the different phases cancel each other out. You can, however, detect multi-phase electricity cables at shallow depths as metal objects.
Conductive wall surfaces, such as certain tiles, may result in electricity cables no longer being indicated or the light-up ring (1) lighting up red over a large area.
Flat lying electricity cables (up to max. 2–3 cm in depth) may also be indicated as metal objects. However, this does not apply to solid-wire cables.

Switch off power consumers and make sure that live cables are de-energized before drilling, sawing or milling into walls, ceilings or floors. After performing any kind of work, check to ensure that objects placed on the substrate are not live.

Information about Object Indication

When the wood detection function is switched on, other objects, such as water-filled plastic pipes, power cables or gas lines, may be indicated as non-metallic objects in certain circumstances. Before drilling, sawing or milling, use other sources of information to check that the object found is actually a wooden beam and not another object (e.g. a plastic pipe, power cable, gas line).
Nails and screws in the base material may result in wooden beams being identified as metal objects.
Wider objects can be identified by the light-up ring (1) lighting up red over a wide area. Under certain circumstances, wide objects may not be indicated to their entire extent.

Before drilling, sawing or routing into walls, refer to other sources of information to ensure that you eliminate hazards. As the measuring results can be influenced through ambient conditions or the nature of the wall, there may be a hazard even though the measuring indicator (b) does not indicate an object in the sensor area, no audio signal sounds and the light-up ring (1) lights up green.

Errors – Causes and Corrective Measures

Recalibrating the Measuring Tool
If a metal object is indicated and the measuring indicator (b) indicates a continuously high amplitude, even though there is no metal object near the measuring tool, the measuring tool can be manually recalibrated.

Ensure that the battery charge indicator (d) still shows a capacity of at least 1/3.
Switch the measuring tool off.
Remove all objects near the measuring tool that could be detected (including watches or metal rings). Hold the measuring tool up horizontally so that the rear side of the measuring tool is pointing towards the floor.
To switch to calibration mode, simultaneously press the on/off button (7) and the audio signal button (6). Press and hold both buttons (for approx. 5–10 s) until the lightup ring (1) flashes red.
To start recalibration, press and hold the audio signal button (6) (for approx. 5−10 s) until the light-up ring (1) lights up red.
If the calibration was successful, the measuring tool will start automatically after a few seconds and will be ready for operation again.

Note: If the measuring tool does not start automatically, repeat the recalibration. If the measuring tool does not start, send it to an authorised Bosch after-sales service centre.

Maintenance and Service

Maintenance and Cleaning
Check the measuring tool before each use. If the measuring tool is visibly damaged or parts have become loose inside the measuring tool, safe function can no longer be ensured.

Always keep the measuring tool clean and dry to ensure optimum, safe operation.
Never immerse the measuring tool in water or other liquids.
Wipe off any dirt using a dry, soft cloth. Do not use any detergents or solvents.
Do not remove the contact pads (18) on the rear side of the measuring tool.
Only store and transport the measuring tool in the protective bag provided.

After-Sales Service and Application Service
Our after-sales service responds to your questions concerning the maintenance and repair of your product as well as spare parts. You can find explosion drawings and information on spare parts at: www.bosch-pt.com

The Bosch product use advice team will be happy to help you with any questions about our products and their accessories.

In all correspondence and spare parts orders, please always include the 10‑digit article number given on the nameplate of the product.

Malaysia

Robert Bosch Sdn. Bhd.(220975-V) PT/SMY No. 8A, Jalan 13/6 46200 Petaling Jaya Selangor
Tel.: (03) 79663194
Toll – Free : 1800 880188
Fax : (03) 79583838
E-Mail: kiathoe.chong@my.bosch.com
www.bosch-pt.com.my

Great Britain

Robert Bosch Ltd. (B.S.C.) P.O. Box 98 Broadwater Park North Orbital Road Denham Uxbridge UB 9 5HJ

At www.bosch-pt.co.uk you can order spare parts or arrange the collection of a product in need of servicing or repair.

Tel. Service: (0344) 7360109
E-Mail: boschservicecentre@bosch.com

You can find further service addresses at : www.bosch- pt.com/serviceaddresses

Transport
The recommended lithium-ion batteries are subject to legislation on the transport of dangerous goods. The user can transport the batteries by road without further requirements. When the batteries are shipped by third parties (e.g. air transport or forwarding agency), special requirements on packaging and labelling (e.g. ADR regulations) must be met. A dangerous goods expert must be consulted when preparing the items for shipping. Dispatch battery packs only when the housing is undamaged. Tape or mask off open contacts and pack up the battery in such a manner that it cannot move around in the packaging. Please also observe the possibility of more detailed national regulations.

Disposal
Electrical and electronic equipment, batteries, accessories and packaging should be sorted for environmentally friendly recycling. Do not dispose of electrical and electronic equipment and batteries in the household waste!

Only for EU countries:
According to the Directive 2012/19/EU on waste electrical and electronic equipment and its transposition into national law, electrical and electronic equipment that are no longer usable, and, according to the Directive 2006/66/EC, defective or drained batteries must be collected separately and disposed of in an environmentally correct manner. If disposed of incorrectly, waste electrical and electronic equipment may have harmful effects on the environment and human health, due to the potential presence of hazardous substances.

Only for the United Kingdom:
According to The Waste Electrical and Electronic Equipment Regulations 2013 (SI 2013/3113) (as amended) and the Waste Batteries and Accumulators Regulations 2009 (SI 2009/890) (as amended), products that are no longer usable must be collected
separately and disposed of in an environmentally friendly manner.

Battery packs/batteries:
Li-ion: Please observe the notes in the section on transport (see “Transport”, page 37).

Robert Bosch Power Tools GmbH
70538 Stuttgart GERMANY

www.bosch-pt.com

Licenses
Copyright © 2009–2013 ARM LIMITED

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of ARM nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Apache 2.0 License
Copyright © 2009-2020 Arm Limited. All rights reserved.

Version 2.0, January 2004
http://www.apache.org/licenses/

TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

Definitions.

“License” shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document.
“Licensor” shall mean the copyright owner or entity authorized by the copyright owner that is granting the License.
“Legal Entity” shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, “control” means (I) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity.
“You” (or “Your”) shall mean an individual or Legal Entity exercising permissions granted by this License.
“Source” form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files.
“Object” form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types.
“Work” shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below).
“Derivative Works” shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof.
“Contribution” shall mean any work of authorship, including the original version of the Work and any modifications or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, “submitted” means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as “Not a Contribution.”
“Contributor” shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution
has been received by Licensor and subsequently incorporated within the Work.

Grant of Copyright License.
Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form.

Grant of Patent License.
Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted. If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed.

Redistribution.
You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions:

You must give any other recipients of the Work or Derivative Works a copy of this License; and
You must cause any modified files to carry prominent notices stating that You changed the files; and
You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and
If the Work includes a “NOTICE” text file as part of its distribution, then any Derivative Works that You distribute must include a readable copy of the attribution notices contained within such NOTICE file, excluding those notices that do not pertain to any part of the Derivative Works, in at least one of the following places: within a NOTICE text file distributed as part of the Derivative Works; within the Source form or documentation, if provided along with the Derivative Works; or, within a display generated by the Derivative Works, if and wherever such third-party notices normally appear. The contents of the NOTICE file are for informational purposes only and do not modify the License. You may add Your own attribution notices within Derivative Works that You distribute, alongside or as an addendum to the NOTICE text from the Work, provided that such additional attribution notices cannot be construed as modifying the License. You may add Your own copyright statement to Your modifications and may provide additional or different license terms and conditions for use, reproduction, or distribution of Your modifications, or for any such Derivative Works as a whole, provided Your use, reproduction, and distribution of the Work otherwise complies with the conditions stated in this License.

Submission of Contributions.
Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions.

Trademarks.
This License does not grant permission to use the trade names, trademarks, service
marks, or product names of the Licensor, except as required for reasonable and customary use in
describing the origin of the Work and reproducing the content of the NOTICE file.

Disclaimer of Warranty.
Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License.

Limitation of Liability.
In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages.

Accepting Warranty or Additional Liability.
While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability.

END OF TERMS AND CONDITIONS

Warranty Disclaimer
This product contains Open Source Software components which underly Open Source Software Licenses. Please note that Open Source Licenses contain disclaimer clauses. The text of the Open Source Licenses that apply are included in this manual under “Licenses”.

Hereby, Robert Bosch Power Tools GmbH declares that the radio equipment type GMS 120‑27 is in compliance with Directive 2014/53/EU. The full text of the EU declaration of Conformity is available at the following internet address:

Declaration of Conformity
Hereby, Robert Bosch Limited as authorized representative acting on behalf of Robert Bosch Power Tools GmbH declares that the radio equipment type GMS 120‑27 is in compliance with the Radio Equipment Regulations 2017. The full text of the declaration of conformity is available at the following internet address: https://gb-doc.bosch.com

FAQ

Q: How do I know if the battery pack is fully charged?
A: The charging indicator will turn green when the Li-Ion battery pack is fully charged.

Q: Can the GMS 120-27 Professional detect wooden objects?
A: The device is primarily designed to detect metals and may not accurately detect wooden objects.