HOTO H-D50 Smart Laser Rangefinder User Manual
- June 12, 2024
- HOTO
Table of Contents
HOTO H-D50 Smart Laser Rangefinder
Product Information
The HOTO Smart Laser Measure Pro is a versatile tool that allows for precise distance, angle, size, and virtual scale measurements. It features a laser receiver lens and a laser emission lens for accurate measurements. The device has a display that shows real-time measurement data, measurement history, battery indicator, Bluetooth connection status, and measurement unit. It also includes a mode switching button, power/measure button, metal lanyard hole, and Type-C charging port for convenience.
Product Usage Instructions
Power On/Off
To power on the device, press and hold the power/measure button for more
than 1 second. The display will light up, and the tool will enter test mode.
To power off the device, press and hold the power/measure button for more than
3 seconds. If the product is inactive for 180 seconds, it will automatically
turn off.
Mode Switching
To switch between different modes, flip the switch up or down. The modes
include Distance Measurement, Angle Measurement, angle and Height Measurement,
Size Measurement, and Virtual Scale. Flip the switch downwards to change modes
in sequential order and upwards to change modes in reverse order.
Measuring Distance
After powering on the device, short press the power/measure button to emit a
laser and measure the distance. The present distance will be displayed in
real-time on the display. Press the power/measure button again to stop the
laser emission. The fixed numbers on the display show the measurement values.
Measuring Angles
Flip the switch up or down to enter the Angle Measuring mode. The angle
will be displayed in real-time on the display. Press the power/measure button
again to stop the laser emission. The numbers on the display will stop to show
the measurement values.
Measuring Size
Flip the switch up or down to enter the Size Measurement mode. Short press
the measure button once to emit the laser. The measurement will be conducted
in real-time and shown on the display. Press the measure button again to stop
the laser emission. The measurement shows the length of the rectangle. To
measure the width of the rectangle, use the same method as above. The
instrument will automatically calculate the size of the rectangle. To continue
measuring, short-press the measure button again.
Virtual Scale
Flip the switch up or down to enter the Virtual Scale mode. Short press the
measure button once to emit the laser. The measurement will be conducted in
real-time. The default unit is centimeters (cm). Press the power/measure
button again to stop the laser emission, and the number on the display will
show the measurement data. The minimum adjustable length is 0.2 meters (m),
and the maximum length is 50 meters (m).
Connecting to the HOTO App
To connect the device to the HOTO app, scan the product’s QR code or search
for the HOTO app in your app store. Download and install the HOTO app. If the
app was previously installed, you will be directed to the device connection
page.
Product Overview
Please read this manual carefully before using the product and keep it for future reference.
Thank you for using HOTO Smart Laser Measure Pro.
- Laser receiver lens
- Laser emission lens
- Display
- Power
- Measure button
- Mode switching
- button
- Metal lanyard hole
- Type-C charging port
Display
- Measuring basis
- Laser emission alert
- Battery indicator
- Bluetooth connection
- Measuring angles in real time
- Measurement history – Group 1
- Measurement history – Group 2
- Measurement history – Group 3
- Real-time measurement data
- Measurement unit
How to Use
Turning on/off
Power-on: In the power-off state, pressing the power/measure button for more
than 1s will start the tool. The display will light up and enter test mode.
Power-off: In the power-on state, pressing the power/measure button for more
than 3s will turn off the tool. If the product is inactive for 180s, it will
automatically turn off.
Vibration
- The instrument vibrates once when it is manually powered on/off.
- The instrument vibrates once when the switch is flipped to change modes.
- The instrument vibrates once when the measurement is finished.
Mode switching
Flip the switch down to change modes in turn: Distance Measurement＞Angle
Measurement＞Angles and Height Measurement＞ Size Measurement＞Virtual Scale.
Flip the switch upwards to change modes in reverse order.
Measuring distance
After starting the product, short press the power/measure button, and the tool
will emit a laser and measure the distance. The present distance will be
displayed in real-time. Press the power/measure button again to stop laser
emission. The fixed numbers show measurement values.
Measuring angles
Flip the switch up or down to launch the Angle Measuring mode. Angle is
displayed in real-time. Press the power/measure button again to stop laser
emission. Numbers will stop to show measurement values.
Measuring angles and height
Flip the switch up and down to initiate the Angle and Height Measurement mode.
Short press the measure button once to emit the laser. The measurement will be
conducted in real-time and seen on the display. Press the measure button again
to stop laser emission. The number will stop and show the measurement data of
a triangle’s hypotenuse and inclination. After measuring the hypotenuse and
inclination, the instrument will automatically calculate the height and
horizontal distance. To continue the measurement, short-press the measure
button again.
Measuring size
- Flip the switch up or down to enter the Size Measurement mode.
- Short press the measure button once to emit the laser. The measurement will be conducted in real-time and seen on the display. Press the measure button again to stop laser emission. The measurement shows the rectangle’s length.
- Use the same method to measure the rectangle’s width, and the instrument will automatically calculate the rectangle’s size.
- To continue the measurement, short-press the measure button again.
Virtual scale
- Flip the switch up or down to launch the Virtual Scale mode.
- Short press the measure button once to emit the laser. The measurement will be conducted in real-time. The default unit is cm.
- Press the power/measure button again to stop laser emission, and the number will stop and show the measurement data.
- The minimum adjustable length is 0.2 m and the maximum length is 50 m.
Connecting to the HOTO app
Scan the product’s QR code or search for “HOTO app” in your app store.
Download and install the HOTO app. If the app was previously installed, you
will be directed to the device connection page.
Bluetooth connection
- Bluetooth is on by default and cannot be turned on manually. The screen will show a
- Bluetooth will automatically turn on once when product is started, displaying a flashing ” ” icon flashing. The HOTO app will automatically search for devices to pair with.
- When the product is started, open the HOTO app and click the upper right corner to add a device. Follow the steps, and the ” ” will be permanently lit on when the connection is successful.
- If the connection fails within the 180s, Bluetooth will automatically turn off to save energy.
Note: HOTO Smart Laser Measure Pro has a non-independent and complete Bluetooth module with CMIIT ID: 2020DP2859.
Tips
- If the QR code cannot be scanned, please search for the product name to add the device.
- Due to updates on the HOTO app, the actual operation may slightly differ from the description provided above. Please follow the indications on the app.
Switching reference plane
By default, the reference plane of the product is the end reference So please
use the product end as the reference plane. To use the front reference please
switch the reference plane in Product Settings – Rangefinder Settings in the
app.
Changing measurement units
The product supports three measurement units, with (meters) by default.
- Length units: 0.000m, 0.000ft, 0′ 00” 1/16 Size units: 0.000m^2, 0.000ft^2, 0.000ft^2
To use ft (foot) or 0′ 00” 1/16 (foot, inch, 1/16), please switch the measurement units in Product Settings found in the app.
Bluetooth reset
When the laser measure is on/off, press and hold the power/measure button for 7
seconds, and the screen displays “RESET” and ” ” to reset the product’s
Bluetooth network configuration information
Charging
- This rangefinder is equipped with a universal Type-C charging port and comes with a USB charging cable.
- If it has not been used for a long time, fully charge the product before use. The tool does not measure during the charging process.
Warnings
Warnings!
Read the safety and operating instructions carefully before using the laser
measure for the first time.
- Read the safety and operating instructions carefully before use. Failure to use the laser measure in accordance with the instructions indicated by this user manual will lead to damage to the laser measure, decreased measurement accuracy, or injuries to users or other people.
- Do not use any methods to disassemble or repair the laser measure on your own. Never illegally modify or change the laser emitting performance of the laser measure. Properly store the laser measure and keep it out of reach of children and unrelated people.
- Do not point the laser light at your eyes and other body parts or those of other people. Never aim the laser light at the surfaces of highly reflective objects.
- Do not use the laser measure near air or medical equipment, or use it in a flammable or explosive environment, because the electromagnetic radiation of this laser measure may interfere with other devices.
- Do not dispose of used ba eries and unusable laser measures with household waste. Dispose of them per national or local laws and regulations.
LASER RADIATION
DO NOT STARE INTO THE BEAM
CLASS 2 LASER PRODUCT
Maximum output of laser radiation<1 mW wavelength 630‒680 nm
IEC 60825‒1:2014; EN 60825‒1:2014
All products bearing this symbol are waste electrical and electronic equipment
(WEEE as in directive 2012/19/EU) which should not be mixed with unsorted
household waste. Instead, you should protect human health and the environment
by handing over your waste equipment to a designated collection point for the
recycling of waste electrical and electronic equipment, appointed by the
government or local authorities. Correct disposal and recycling will help
prevent potential negative consequences to the environment and human health.
Please contact the installer or local authorities for more information about
the location as well as the terms and conditions of such collection points.
We Shanghai HOTO Technology Co., Ltd., hereby, declare that this equipment is
in compliance with the applicable Directives and European
- Norms, and amendments.
- Federal Communications Commission Supplier’s
- Declaration of Conformity
- This supplier’s declaration of conformity is hereby for
- Product: HOTO Smart Laser Measure Pro
- Model Number(s): H-D50
- Brand/Trade: HOTO
We declare that the above-mentioned device has been tested and found in compliance with CFR 47 Part 15 Regulation. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and the receiver.
- Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Representative of Responsible Party for SDoC
Company: Shanghai HOTO Technology Co., Ltd.
Address: Building 45, No.50 Moganshan Road, Putuo District, Shanghai, China
Country: China
Telephone No.: 400-021-8696
FCC Warning
Any changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment. This
equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment.
Troubleshooting
When the product is in use, the following indicators may appear in the main display area:
Specifications
- Model: H-D50
- Measurement Range: 0.05—50 m
- Measurement Accuracy: ±（2 mm+D*1/10000）
- Analog Ruler Scale Accuracy： ±（4 mm+D*1/10000）
- Minimum Displaying Unit: 0.001 m
- Measurement Unit: m/ft
- Laser Type: 630‒680 nm wavelength
- Lithium-ion Battery: 3.7 V 850 mAh
- Display Screen: 1.77-inch LCD screen
- Charging Input: 5 V 1 A
- Operating Power: 1 W(MAX.)
- Charging Time: Approx. 100 min
- Automatic Turn-off Time: 180 s
- Automatic Laser Off Time: 180 s
- Operating Temperature: -10°C to 50°C
- Storage Temperature: -20°C to 60°C
- Storage Humidity: 20%‒80% RH
- Item Dimensions: 99.5×44.1×23.3 mm
- Net Weight: Approx. 90 g
- Bluetooth Transmission Distance: Approx. 8 m
In the analog ruler mode, the test accuracy is ±4mm. “D” refers to the actual distance in an indoor environment with standard reflectiv surfaces. All data produced by this product vary slightly due to different actual measurement environments and should depend on users’ actual measurements. The rangefinder is appropriate for indoor measurements. The measurement results will have relatively wide discrepancies in such harsh environments as extremely strong sunlight or excessively fluctuated temperature, weak reflective surfaces, and low battery power. The measuring range of 0.05m is the minimum measurable distance using head-based reference mode. Manufacturer: Shanghai HOTO Technology Co., Ltd. Address: Building 45, No. 50 Moganshan Rd, Putuo District, Shanghai, PRC, 200060.
DECLARATION OF CONFORMITY
EU Declaration of ConformityWe Shanghai HOTO Technology Co., Ltd.
Declare that the product:
HOTO Smart Laser Measure Pro / H-D50
Complies with the essential health and safety requirements of the following
directives: 2014/53/EU The Machinery Directive
References to the following harmonized standard were made: EN 62479:2010
- EN 61010-1:2010
- ETSI EN 301 489-1 V2.2.3:2019
- ETSI EN 301 489-17 V3.2.2:2019
- EN 61326-1:2013
- EN 61000-3-2:2019
- EN 61000-3-3:2013+A1:2019
- ETSI EN 300 328 V2.2.2:2018
20011/65/EU+ (EU) 2015/863 Restrictions of the Use of Certain Hazardous
Substances in Electrical and Electronic Equipment Authorised signatory and
technical file holder: Shanghai HOTO Technology Co., Ltd.
Building 45, No.50 Moganshan Road, Shanghai, China