VOLTCRAFT 1090519 Digital Multimeter Instruction Manual

1090519 Digital Multimeter

Digital Multimeter – Item No. 1090519

The Digital Multimeter is designed for measuring DC and AC voltage, DC current, resistance, and testing diodes. It is built with safety features such as fuses and protection against overload.
The product is in Schutzklasse II which means it has double insulation for added safety.

Product Description

• Drehschalter (4) – Rotary switch for selecting different measurement modes.
• Blitzsymbol bei Spannungsmessungen – Flash symbol for voltage measurements.
• mV, V, A, mA, Hz, kHz, MHz, Ohm, k, M, %, hFE, COM, Bezugspotential, H, NCV – Display symbols for different measurements.

Product Usage Instructions

Step 1: Safety Precautions

• Never touch circuits or parts of circuits when they may contain voltages greater than 33 V/ACrms or 70 V/DC.
• The maximum permissible voltage in the current measuring circuit must not exceed 250 V.
• Measurements above 5 A may only be carried out for a maximum of 10 seconds with a subsequent measuring pause of 15 minutes.

Step 2: Measuring DC Voltages

1. Switch the DMM on with the POWER button (3).
2. Select the measuring range V.
3. Connect the black measuring lead to the COM socket (5) and the red measuring lead to the V socket (8).
4. Connect the two measuring probes to the object to be measured (battery, switch, etc.). Connect the red probe tip to the positive terminal and the black probe tip to the negative terminal.
5. The polarity of the measurement is indicated on the display.

Step 3: Measuring Current

• Never exceed the maximum permitted input values.
• Proceed as follows to measure DC current:
  1. Select the measuring range A.
  2. Connect the red measuring lead into the 10 A measuring socket (6) for currents above 200 mA or into the mA measuring socket (7) for currents below 200 mA.
  3. Connect the two measuring probes to the circuit in series with the load.

Step 4: Measuring Resistance

• Proceed as follows to measure resistance:
  1. Select the measuring range Ω.
  2. Connect the black measuring lead to the COM socket (5) and the red measuring lead to the Ω socket (8).
  3. Connect the two measuring probes to the object to be measured (resistor, etc.).

Step 5: Testing Diodes

• Proceed as follows to test diodes:
  1. Select the diode testing mode on the rotary switch.
  2. Connect the black measuring lead to the COM socket (5) and the red measuring lead to the V socket (8).
  3. Connect the two measuring probes to the diode in parallel.

Remember to always refer to the user manual for specific instructions and precautions when using the Digital Multimeter.

Introduction

Dear customer,
In purchasing this Voltcraft® product, you have made a very good decision for which we would like to thank you.
Voltcraft® – In the field of measuring, charging and network technology, this name stands for high-quality products which perform superbly and which are created by experts whose concern is continuous innovation.
From the ambitious hobby electronics enthusiast to the professional user, Voltcraft® family products provide the opti-mum solution even for the most demanding tasks. And, in particular, we offer you the mature technology and reliable quality of our Voltcraft® products at an almost unbeatable price- performance ratio. This is why we are absolutely certain: With our Voltcraft® product line, we have created the basis for a long, prosperous and successful cooperation.
We wish you a great deal of enjoyment with your new Voltcraft® product.
All company and product names contained herein are trademarks of their respective owners. All rights reserved.

These operating instructions are part of this product. They contain important information on setting up and using the product. Do not give this product to a third party without the operating instructions. Therefore, retain these operating instructions for reference!

If there are any technical questions, please contact: www.conrad.com/contact

Description of symbols

The symbol with an exclamation mark in a triangle is used to highlight important information in these operating instructions. Always read this information carefully.

The symbol with the lightning in the triangle is used if there is a risk to your health, e.g., due to an electric shock.

→ The arrow symbol indicates special information and tips on how to use the product.

CE: This product has been CE-tested and meets the relevant European guidelines

The product is designed according to Protection Class II.

CAT II: Measurement Category II: for measurements on electric and electronic devices connected to the mains supply with a mains plug. This category also includes all lower categories (e.g. CAT I for measuring signal and control voltages).

CAT III: Measurement Category III: For measuring circuits of installations in buildings (e.g. mains sockets or sub- distributions). This category also includes all lower categories (e.g. CAT II for measuring electrical devices). Measurement in CAT III is only permitted with protective caps over the probe tips.

CAT IV: Measurement Category IV: for measurements at the source of the low-voltage installation (e.g. main distribution, home delivery points of the utility companies, etc.).

Earth potential

Intended use

• Measurement and display of the electrical values in the range of measurement category CAT III (up to 250 V against earth potential according to EN 61010-1) and all lower categories. The measuring device must not be used in the CAT IV measurement category.
• Measurement of direct and alternating voltages up to 250 V
• Measurement of direct current up to 10 A
• Measurement of resistance values of up to 20 MOhm.
• Acoustic continuity check
• Diode tests
• Non-contact 230 V/AC voltage test
• hFE transistor test (only with optional measuring adapter)

The two current measurement inputs are protected against overload. The voltage in the measuring circuit may not exceed 250 V. The measuring ranges are equipped with ceramic high-performance fuses.
Only use batteries of the specified type.
For safety reasons, only use measuring leads or accessories that match the device specifications.
The multimeter must not be operated when open, with the battery compartment open or with the battery compartment cover missing. The device is intended for indoor use only. Contact with moisture must be avoided at all costs. Measurements in damp rooms or under adverse ambient conditions are not permitted.

Unfavorable ambient conditions include:

• Wetness or high air humidity,
• Dust, flammable gases, vapors or solvents,
• Thunderstorms or similar conditions such as strong electrostatic fields, etc.

Using this product for purposes other than those described above may damage the product and result in short circuit, fire or electric shock. The product must not be modified or reassembled!
Read the operating instructions carefully and keep them in a safe place for future reference.
Always observe the safety information in these instructions.

Delivery content

• Multimeter
• 9 V block battery
• Safety measuring leads with attached CAT III protective caps
• Operating instructions

Up-to-date operating instructions
Download the latest operating instructions at www.conrad.com/downloads or scan the QR code shown. Follow the instructions on the website.

Description

The multimeter (DMM) displays measurements on a digital display. The measured value display of the DMM comprises 2000 counts.
The measuring device can be used in both hobby and professional fields (up to CAT III 250 V).
For better readability, the DMM can be ideally positioned with the rear support bracket.

Rotary switch (4)
The measurement modes are selected using the rotary dial.
The measuring range is selected manually.

Switching the meter on and off
The DMM is switched on and off via the “POWER” button (3). Always turn the measurement device off when it is not in use.
Prior to working with the measuring device, you first have to insert the enclosed battery.
Insert the battery as described in chapter “Cleaning and Maintenance”. A 9 V block battery is required for voltage supply. It is included.

Safety information

These instructions contain important information on how to use the device correctly. Please read them care-fully before using the device for the first time.
Damage caused due to failure to observe these instructions will void the warranty. We shall not be liable for any consequential damage!
We shall not be liable for damage to property or personal injury caused by incorrect handling or failure to observe the safety information! Such cases will void the warranty/guarantee.

• This device was shipped in a safe condition.

• To ensure safe operation and to avoid damaging the device, always observe the safety information and warnings in these instructions.

• The unauthorized conversion and/or modification of the product is inadmissible for reasons of safety and approval (CE).

• Consult an expert when in doubt about the operation, safety or connection of the device.

• The measurement device and its accessories are not toys and must be kept out of the reach of children.

• For installations in industrial facilities, follow the accident prevention regulations for electrical systems and equipment issued by the national safety organization or the corresponding national authority.

• In schools, educational facilities, hobby and DIY workshops, measuring devices must be operated under the responsible supervision of qualified personnel.

• The voltage between the connection points of the measuring device and earth potential must not exceed 250 V (DC/AC) in CAT III.

• When using test leads without protective caps, measurements between the measuring device and the earth potential must not exceed the CAT II measurement category.

• When taking CAT III measurements, the protective caps must be placed on the probe tips to avoid accidental short circuits.

• Push the protective caps onto the probe tips until they click into place. To remove the caps, pull them off the tips with some force.

• Always remove the probe tips from the measured object before changing the measurement range.

• Exercise particular caution when working with voltages higher than 33 V(AC) and 70 V (DC)! Touching electrical conductors with these voltages may cause a fatal electric shock.

• Check the measuring device and test leads for signs of damage before each measurement. Never take measurements if the protective insulation is damaged (torn, missing, etc.). Measuring cables have a wear indicator. The second layer of insulation will become visible if the lead is damaged (the second layer of insulation is a different color). If this occurs, discontinue use and replace the measurement accessory.

• To prevent an electric shock, do not touch the measuring points when taking measurements, either directly or indirectly. When taking measurements, do not touch any area beyond the grip markings on the probe tips.

• Do not use the multimeter just before, during or just after an electrical storm (electric shock /high-power surges!). Ensure that your hands, shoes, clothes, the floor, circuit and circuit components are dry.

• Avoid using the device in the immediate vicinity of:

  • Strong magnetic or electromagnetic fields
  • Transmitting antennas or HF generators.
    These may distort the measurements.

• If you suspect that safe operation is no longer possible, stop using the device immediately and prevent unauthorized use. Safe operation can no longer be assumed if:

  • There are signs of damage
  • The device does not function properly
  • The device was stored under unfavorable conditions for a long period of time
  • The device was subjected to rough handling during transport.

• Do not switch the measuring device on immediately after it has been brought from a cold room into a warm one. The condensation generated may destroy the product. Leave the device switched off and allow it to reach room temperature.

• Do not leave packaging material lying around carelessly, as it may become a dangerous toy for children.

• Observe the safety information in each section.

Operating elements

1. Non-contact voltage detector
2. LC display
3. POWER button
4. Rotary switch
5. COM measuring socket (reference potential)
6. 10 A measuring socket
7. mAμA measuring socket
8. V measuring socket
9. HOLD button
10. Battery compartment
11. Support bracket

Display elements and icons

• I Overload = Overflow; the measuring range has been exceeded
• Battery replacement icon; please change the battery as soon as possible
• Diode test icon, VC130-1 signaled with “I” Blitz
• Lightning icon during voltage measurements
• Acoustic continuity tester icon
• Alternating magnitude for voltage and current
• Direct magnitude for voltage and current
• mV Millivolt (exp. 3)
• V Volt (unit of electrical voltage)
• A Ampere (unit of electrical current)
• mA Milliampere (exp. 3)
• μA Microampere (exp. 6)
• Hz Hertz (unit of frequency)
• kHz Kilohertz (exp. 3)
• MHz Megahertz (exp. 6)
• Ω Ohm (unit of electrical resistance)
• kΩ Kiloohm (exp. 3)
• MΩ Megaohm (exp. 6)
• % Display of the pulse-pause ratio (duty cycle)
• °C Unit of temperature
• hFE Display of the amplification factor for transistors
• COM Reference potential
• H Active hold function icon
• NCV Non-contact AC voltage detection

Measuring mode

Never exceed the maximum permitted input values. Never touch circuits or parts of circuits when they may contain voltages greater than 33 V/ACrms 75 V/DC! Danger to life!
Before making measurements, check the connected measuring leads for damage such as cuts, cracks or pinches. Defective measuring leads must no longer be used. Danger to life!
During measuring, do not touch beyond the tactile grip range markings on the test probes.
Only the two measuring leads required for measuring operation may be connected to the meter at any time. For safety reasons, remove all unnecessary measuring leads from the device before taking a measurement.
→ If the measuring range is exceeded, an overflow is shown on the display. This indication is signaled by “I” on VC 130-1. Select the next higher measuring range.
The voltage range “V/DC” has an input resistance of >10 MΩ, the V/AC range

4.5 MΩ.

• a) Voltage measurement ”V”
  Before measuring voltages, always make sure that the measuring instrument is not set to a measuring range for currents.

Proceed as follows to measure “DC” voltages (V ):

• Switch the DMM on with the “POWER” button (3). Select the measuring range “V ”.

• Connect the black measuring lead to the COM socket (5) and the red measuring lead to the V socket (8)

• Connect the two measuring probes to the object to be measured (battery, switch, etc.).
  Connect the red probe tip to the positive terminal and the black probe tip to the negative terminal.

• The polarity of the measurement is indicated on the display.
  →  If “-” appears in front of a direct voltage measurement, this indicates that the measured voltage is negative (or that the measuring probes have been connected in reverse).

• After measuring, remove the measuring leads from the measured object and switch off the DMM at the “POWER” button (3).

Proceed as follows to measure “AC” voltages (V ):

• Start up the DMM as described under “Measuring DC voltage” and select the measuring range “V ”. “AC“ will appear on the display.
• Connect the two measuring probes to the object to be measured (e.g. generator, circuit, etc.).
• The measured value appears on the display.
• After measuring, remove the measuring leads from the measured object and switch off the DMM at the “POWER” button (3).

b) Current measurement “A”
Never exceed the maximum permitted input values. Never touch circuits or parts of circuits when they may contain voltages greater than 33 V/ACrms or 70 V/DC! Danger to life!
The maximum permissible voltage in the current measuring circuit must not exceed 250 V. Measurements 5 A may only be carried out for max 10 seconds and only with a subsequent measuring pause of 15 minutes.
All current measurement ranges are provided with fuses and thus protected against overload.

Proceed as follows to measure DC voltages:

• Connect the red measuring lead into the 10 A measuring socket (6) for currents >200 mA or into the mA measuring socket (7) for currents <200 mA. Connect the black measuring lead into the COM test socket (5).
• Select the desired measuring range. If possible, always start measuring with the largest measuring range, as the fuse will blow if it is exceeded.
• Connect the two measuring probes in series with the measured object (battery, circuit, etc.); the respective polarity of the measured value is shown on the display together with the current measured value.

A minus symbol indicates that the current is flowing in the opposite direction (or that the measuring leads are connected with wrong polarity).
Never measure currents above 10 A in the 10 A range or currents above 400 mA in the mA/μA range, otherwise the fuses will blow.

• c) Measuring resistance
  Make sure that all objects that you wish to measure (including circuit components, circuits and component parts) are disconnected and discharged.

Follow the steps below to measure the resistance:

• Switch on the DMM and select the measuring function “Ω”.
• Connect the black measuring lead to the COM socket (5) and the red measuring lead to the mA/Ω socket (7).
• Check the measuring leads for continuity by connecting both probe tips to one another. The resistance value must then be set to approx. 0.5 ohm (inherent resistance of the measuring leads).
• Connect the probe tips to the object that you want to measure. The measurement value will be indicated on the display (provided that the object you are measuring is not highly resistive or disconnected). Wait until the display stabilizes. This may take a few seconds for resistances greater than 1 MΩ.
• As soon as the “overflow” icon is displayed, you have exceeded the measuring range or the measuring circuit is open.
• After measuring, remove the measuring leads from the measured object and switch off the DMM at the “POWER” button (3).

When taking a resistance measurement, ensure that the points that come into contact with the probe tips are free from dirt, oil, solder and other impurities. These substances may distort the result.

• d) Diode test
  Make sure that all objects that you wish to measure (including circuit components, circuits and component parts) are disconnected and discharged.

• Switch on the DMM and select the measuring function.

• Connect the black measuring lead to the COM socket (5) and the red measuring lead to the mA/Ω socket (7).

• Check the measuring leads for continuity by connecting both probe tips to one another. The value must be approx. 0 V. The open-circuit voltage is approx. 3 V.

• Now connect the two measuring tips to the object that you want to measure (diode).

• If the “overflow” icon is displayed, the diode is measured in reverse direction or the diode is defective (open circuit). Try taking the measurement again with the oppo- site polarity. The red measuring lead corresponds to the positive pole (anode), the black measuring lead to the negative pole (cathode). A silicon diode has a forward voltage of approx. 0.5 – 0.8 V.

• After measuring, remove the measuring leads from the measured object and switch off the DMM at the “POWER” button (3).

• e) Continuity test
  Make sure that all objects that you wish to measure (including circuit components, circuits and component parts) are disconnected and discharged.

• Switch on the DMM and select the measuring function

• Connect the black measuring lead to the COM socket (5) and the red measuring lead to the mA/Ω socket (7).

• A measured value of approx. <10 ohm is detected as continuity and a continuous tone is emitted.

• As soon as the “overflow” icon is displayed, you have exceeded the measuring range or the measuring circuit is open.

• After measuring, remove the measuring leads from the measured object and switch off the DMM at the “POWER” button (3).

f) Non-contact AC voltage test “NCV”
Make sure that all measuring sockets are unoccupied. Remove all measuring leads and adapters from the meter.
This function only serves as an aid. When working on these cables, it is essential to carry out preliminary contact measurements to ensure that they are deenergised.

Switch on the DMM and select the measuring function “NCV”.

• Check this function in advance on a known AC voltage source.
• Guide the measuring device with the sensor surface (1) at a distance of maximum 10 mm to the place to be tested. For twisted lines, it is advisable to check the cable to a length of about 20 -30 cm.
• An acoustic signal sounds when voltage is detected. The display is not needed for this and does not show defined values.
• Switch off the DMM after measuring. Turn the rotary switch to the “OFF” position or switch off the unit via the “POWER” button.

Due to the sensitivity, static fields can also be displayed when touching. This is normal and does not affect the test result.

• g) Transistor test “hFE”
  Transistor tests can only be carried out with the optionally available measuring adapter. No voltage may be applied to the adapter and measured.

• Switch on the DMM and select the measuring function “hFE”.

• Remove all measuring leads from the device.

• Connect the optional measuring adapter to the measuring sockets V (8) and mA (7).

• Place the transistor to be tested with the correct polarity in the corresponding socket. The left socket is for NPN types and the right socket for PNP types. SMD types can also be tested.

• The display shows the gain factor “hFE”.

• After measuring, remove the adapter and switch off the DMM with the “POWER” button (3).

HOLD function
The hold button (9) allows the measured value to be recorded on display. The symbol “H” appears on the display. This facilitates the reading or is for documentation purposes. Press again to switch back to measurement mode.

Optional measuring adapter
To make some measurements easier, an optional measuring adapter is available. This adapter facilitates the connection of transistors and commercially available K-type thermos sensors with miniature plugs. The adapter is connected into the measuring sockets V (8) and mA (7).

Troubleshooting

The multimeter was designed using the latest technology and is safe to use.
However, problems and malfunctions may still occur.
This section tells you how to troubleshoot common issues:

Always observe the safety information in these instructions.

(AC/DC) and select another mode if necessary.
Did you use the wrong measurement sockets?| Check the measuring sockets.
Is the fuse defective?| In A/mA/μA range: Change the fuse as described in chapter “Changing the fuse”.

Repairs other than those described above should be performed only by an authorized specialist.
If you have questions about the device, please contact our technical support team.

Care and cleaning

General information
The multimeter should be calibrated once a year to ensure that measurements remain accurate. Apart from occasional cleaning and fuse replacements, the multimeter requires no servicing. Refer to the following sections for instructions on how to change fuse and battery.
Regularly check the device and measuring leads for signs of damage.

Cleaning
Always observe the following safety information before cleaning the device:

Opening covers on the product or removing parts that cannot be removed by hand may expose life components.
Before cleaning or servicing the, disconnect all cables from the measuring device and all measured objects. Power the multimeter off.

Do not use any cleaning agents containing carbon, benzene, alcohol or the like to clean the product. These may corrode the surface of the instrument. In addition, the vapors emitted by these substances are explosive and harmful to your health. Do not use sharp-edged tools, screwdrivers or metal brushes to clean the device.
Use a clean, damp, lint-free and antistatic cloth to clean the device, display and measuring leads.

Changing the fuse
The current measuring ranges are protected against overload by ceramic fuses. If you cannot take measurements in this range, you will need to replace the fuse.

Proceed as follows to replace the fuse:

• Disconnect the connected test leads from the measuring circuit and from the measuring device. Power the multimeter off.

• Unscrew the three screws on the back of the device and carefully pull the casing apart.

• Replace the defective fuse with a new fuse of the same type and nominal current. The fuses have the following values:
  F1 high capacity fast-acting fuse 1A/250V Dimensions 6.35 x 25 mm. Common designation F1AH250V, BS1362 or similar.
  F2 High-performance fast-acting fuse 10A/600V Dimensions 6.35 x 25 mm. Common designation F10AH600V, TCC600 or similar.

• Close the casing carefully.

Inserting/changing the battery
A 9 V block battery (e.g. 1604 A) is required to operate the meter. You need to insert a new battery prior to initial operation or when the battery change icon appears on the display.
Proceed as follows to insert or change the battery:

• Disconnect the connected test leads from the measuring circuit and from the measuring device. Power the multimeter off.
• Loosen the screw on the back of the battery compartment (10) and carefully pull the battery insert out of the meter.
• Insert a new battery with correct polarity into the battery insert of the measuring device.
• Slide the battery compartment cover into the DMM and close the casing carefully.

Never operate the measuring device when it is open.

DANGER TO LIFE !
Do not leave flat batteries in the device. Even batteries protected against leaking can corrode and thus release chemicals which may be detrimental to your health or destroy the device.
Do not leave batteries unattended. They may be swallowed by children or pets. Seek immediate medical attention if a battery is swallowed.
If you do not plan to use the meter for an extended period, remove the battery to prevent it from leaking.
When handling leaking or damaged batteries, always use suitable protective gloves to avoid chemical burns.
Ensure that the batteries are not short-circuited. Do not throw batteries into fire!
Batteries (non-storage) must not be recharged. There is a risk of explosion.

Only use alkaline batteries, as alkaline batteries are more powerful and have a longer lifespan.

Declaration of Conformity (DOC)

Conrad Electronic SE, Klaus-Conrad-Straße 1, D-92240 Hirschau, hereby declares that this product conforms to Directive 2014/53/EU.

Click on the following link to read the full text of the EU Declaration of Conformity:
www.conrad.com/downloads
Select a language in the menu and enter the product order number in the search box. The EU Declaration of Conformity is available for download in PDF format in the languages available.

Disposal

Electronic devices are recyclable waste and must not be placed in household waste.
At the end of its service life, dispose of the product in accordance with applicable regulatory guidelines.
Remove any inserted batteries and dispose of them separately from the product.

Disposal of used batteries!

As the end user, you are required by law to return all used batteries. They must not be placed in household waste.
Contaminated batteries/rechargeable batteries are labelled with symbols to indicate that disposal in domestic waste is forbidden. The abbreviations for heavy metals in batteries are: Cd = Cadmium, Hg = Mercury, Pb = Lead. Used (rechargeable) batteries can be returned to collection points in your municipality, our stores or wherever (rechargeable) batteries are sold!

That way you fulfil your statutory obligations and contribute to the protection of the environment!

Specifications

• Display………………………………………………………2000 counts
• Measuring rate……………………………………………approx. 2 – 3 measurements/second
• Measuring line length………………………………….approx. 75 cm each
• Measuring impedance…………………………………>10 MΩ (V range)
• Operating voltage……………………………………….9 V block battery
• Operating conditions……………………………………0 °C to 40 °C
• Storage conditions………………………………………-10 °C to +50 °C, max 75% rH, non-condensing
• Operating altitude……………………………………….max 2000 m
• Weight………………………………………………………approx. 200 g
• Dimensions (L x W x H)……………………………….137 x 72 x 35 (mm)
• Measurement category………………………………..CAT III 250V
• Degree of contamination……………………………..2

Measurement tolerances
Accuracy in ± (% of reading + display error in counts (= number of smallest digits)). These accuracy readings are valid for one year at a temperature of +23 °C (± 5 °C) and a relative humidity of less than 75% (non-condensing).

DC voltage, overload protection 250 V

AC voltage (40 – 400 Hz), overload protection 250 V, mean value detection with sinusoidal signal

Range VC130-1| Accuracy (5 – 100% of measurement range)| Resolution
---|---|---
200 V| ±(1.5% + 8)| 0.1 V
250 V| 1 V

DC voltage, overload protection 1 A + 10 A, max 250 V

• Acoustic Continuity tester <10 Ω continuous tone
• Diode test voltage Uo 3.0 V
• Overload protection diode/continuity tester 250 V
• Transistor test “hFE” 0 – 1000ß, test voltage Uce 3 V, test current Ibo 10 μA
• NCV voltage test 230 V/AC

Never exceed the maximum permitted input values. Never touch circuits or parts of circuits with voltages of more than 25 V/ACrms or 35 V/DC! Danger to life!

This is a publication by Conrad Electronic SE, Klaus-Conrad-Str. 1, D-92240 Hirschau (www.conrad.com).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfilming, or the capture in electronic data processing systems require the prior written approval by the editor. Reprinting, also in part, is prohibited. This publication represent the technical status at the time of printing.
Copyright 2021 by Conrad Electronic SE.

References

• France.fr : Explore France and its wonders - Explore France
• Conrad Electronic » Alle Teile des Erfolgs
• Conrad Electronic » All parts of success
• Conrad Electronic – Alle Teile des Erfolgs
• Conrad Electronic » All parts of success
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