Mileseey DT20 Laser Distance Meter User Manual

1. Introduction

The Mileseey DT20 is an innovative 3-in-1 measuring tool that integrates a laser distance meter, a digital tape measure, and smart Bluetooth connectivity for seamless integration with a mobile application. Designed for accuracy and convenience, it is an ideal tool for interior design, construction, carpentry, and industrial surveys, especially for measuring large areas like rooms, apartments, buildings, factories, and warehouses.

The DT20 offers fast, accurate, and reliable measurements with its patented PowerBrust Digital Display technology, providing real-time figures on its LCD screen. It also features advanced optical decoding and tape error correction technology for stable performance.

2. Safety Information

WARNING: LASER RADIATION. DO NOT STARE INTO BEAM.

• This device emits Class II laser radiation (<1mW). Avoid direct eye exposure to the laser beam.
• Do not attempt to disassemble or modify the device. Unauthorized modifications can result in hazardous radiation exposure and void the warranty.
• Keep the device out of reach of children.
• Use only the specified charging method and cable to prevent battery damage or fire hazards.
• Do not expose the device to extreme temperatures, moisture, or direct sunlight for prolonged periods.

3. Product Overview

The Mileseey DT20 is designed for ease of use and durability. Familiarize yourself with its components:

Components:

• LCD Backlit Screen: Displays measurements and device status.
• USB Charging Port: For recharging the internal battery.
• Laser Emission Port: Emits the laser beam for distance measurement.
• Laser Receiving Port: Detects the reflected laser beam.
• Main Gate: Controls the tape measure.
• Tape: 5-meter physical tape measure.
• Ruler Hook: End of the tape for hooking onto surfaces.
• Function Keys: For various measurement modes and settings.
• Back/Off Button (C/OFF): Clears current measurement or turns off the device.
• Measurement Key (ON): Initiates laser measurement or turns on the device.
• History/Bluetooth Button: Accesses measurement history or activates Bluetooth pairing.
• Base/Unit Switch (UNIT): Changes measurement units and reference point.
• Metal Buckle: For attaching to a belt or pocket.
• Lanyard Hole: For attaching a wrist strap or lanyard.

4. Setup and Charging

4.1 Initial Charging

The DT20 comes with a built-in rechargeable lithium polymer battery. Before first use, or if the battery is low, charge the device using the provided Micro-USB cable.

1. Connect the Micro-USB cable to the USB charging port on the device.
2. Connect the other end of the cable to a standard USB power adapter (not included) or a computer USB port.
3. The battery indicator on the LCD screen will show charging status.
4. Once fully charged, disconnect the cable.

4.2 Power On/Off

• Power On: Press the ON button briefly.
• Power Off: Press and hold the C/OFF button for a few seconds. The device will also automatically power off after a period of inactivity to save battery.

5. Operating Modes

The Mileseey DT20 offers three primary measurement modes:

5.1 Laser Measurement Mode

This mode uses a laser beam for precise distance measurements up to 40 meters (130 feet).

1. Enable Laser: Long press the ON button to activate the laser.
2. Measure: Point the laser at the target and press the ON button again to take a measurement. The result will be displayed on the LCD screen.
3. Change Reference Point: Use the UNIT button to switch between measuring from the front or rear of the device.

5.2 Tape Measurement Mode

This mode utilizes the physical 5-meter (16-foot) tape measure with a digital display for enhanced readability.

1. Pull out Tape: Extend the tape measure to the desired length.
2. Digital Readout: The measurement will be displayed in real-time on the LCD screen.
3. Tape Lock: Press the main gate switch to lock the tape in place, preventing rebound and ensuring stable readings.

5.3 Digital Display Measurement Mode

This mode specifically highlights the digital readout of the tape measure, providing clear and accurate data even in low-light conditions thanks to the backlit screen.

6. Advanced Measurements and Calculations

The DT20 can perform more than just simple distance measurements:

• Area Measurement: Take two measurements (length and width) and the device will calculate the area.
• Volume Measurement: Take three measurements (length, width, and height) and the device will calculate the volume.
• Indirect Pythagorean Theorem: For inaccessible distances, the device can calculate the length using the Pythagorean theorem.

Data Storage

The device can store up to 50 sets of measurement data for later review or transfer.

7. Bluetooth Connectivity and Mobile App

The DT20 Bluetooth version includes a built-in Bluetooth module, allowing it to connect to a mobile application (e.g., JoyPlan) to transmit measurement data, making your work more efficient.

1. Pairing: Activate Bluetooth on your smartphone and on the DT20 (refer to device instructions for specific pairing steps, usually by pressing the History/Bluetooth button).
2. Data Transfer: Once connected, measurement data can be sent directly to the app.
3. Floor Plan & 3D Design: Use the app to draw out floor plans and create 3D design sketches based on the transferred measurements. You can also add details like doors, windows, and furniture within the app.
4. Sharing: The app allows you to take pictures, share photos, or export files (e.g., CAD templates) with others.

8. User Tips

• The DT20 provides accurate measurements within ±3mm for laser ranging and ±1/16 inch for tape measurement.
• Utilize the indirect Pythagorean theorem function for measuring heights or distances that are difficult to access directly.
• The device is rechargeable, ensuring long-term usability.
• The DT20 is CE and FCC certified, meeting international safety and performance standards.
• For the DT10 DTAPE model, note that it does not include Bluetooth functionality.

9. Maintenance

• Cleaning: Wipe the device with a soft, damp cloth. Do not use abrasive cleaners or solvents.
• Storage: Store the device in a dry, cool place, away from direct sunlight and extreme temperatures.
• Protection: The device features impact-absorbing geometries and soft materials for protection against drops and shocks. However, avoid unnecessary impacts to prolong its lifespan.
• Battery Care: For long-term storage, ensure the battery is partially charged (around 50%) and recharge it every few months to prevent deep discharge.

10. Troubleshooting

Device does not power on:

Ensure the battery is charged. Connect to a power source and try again.

Inaccurate laser measurements:

Ensure there is a clear line of sight to the target and the laser emission/receiving ports are clean. Check the reference point setting (front or rear of device).

Tape measure does not extend/retract smoothly:

Check for any obstructions or debris in the tape mechanism. Ensure the tape lock is disengaged.

Bluetooth connection issues:

Ensure Bluetooth is enabled on both the DT20 and your smartphone. Make sure the device is within range of your phone. Restart both devices and try pairing again. Confirm you have the correct mobile app installed.

Digital display is not working:

Check battery level. If the issue persists, contact customer support.

11. Specifications

12. Warranty and Support

For warranty information, technical support, or any questions regarding your Mileseey DT20 Laser Distance Meter, please refer to the official product documentation included in your package or contact the seller directly. Keep your purchase receipt as proof of purchase.