HOTO QWCJY001
HOTO Laser Measuring Tool User Manual
Model: QWCJY001
1. Introduction
The HOTO Laser Measuring Tool is a compact and precise device designed for quick and accurate distance measurements. Featuring a digital OLED display and Bluetooth connectivity, it seamlessly integrates with the Mi Home app for enhanced functionality and data management. This manual provides essential information for setup, operation, maintenance, and troubleshooting to ensure optimal performance of your device.

Figure 1: HOTO Laser Measuring Tool - Front View
This image shows the compact design of the HOTO Laser Measuring Tool, held comfortably in one hand, highlighting its digital display and the distinctive yellow ring for grip.
2. Safety Information
Please read all safety warnings and instructions carefully before using this product. Failure to follow the warnings and instructions may result in serious injury.
2.1 Laser Safety
- This device emits a Class 2 laser. Do not stare directly into the laser beam.
- Do not aim the laser beam at people or animals.
- Avoid direct eye exposure to the laser beam.
- Do not disassemble or modify the device. Unauthorized modifications may result in hazardous laser radiation exposure.
2.2 General Safety
- Keep the device out of reach of children.
- Use the device only for its intended purpose as described in this manual.
- Do not use the device in explosive atmospheres or near flammable liquids or gases.
- Protect the device from moisture and direct sunlight.
3. Package Contents
Ensure all items are present upon unboxing:
- HOTO Laser Measuring Tool (Model: QWCJY001)
- USB Type-C Charging Cable
- User Manual (this document)
Video 1: Unboxing and Initial Setup of the HOTO Laser Measuring Tool.
This video demonstrates the unboxing process of the HOTO Laser Measuring Tool, showing the device, charging cable, and user manual. It also briefly shows the initial power-on sequence.
4. Setup
4.1 Charging the Device
Before first use, fully charge the device using the provided USB Type-C cable. Connect the cable to the charging port on the side of the device and plug the other end into a compatible USB power source (e.g., computer, wall adapter).

Figure 2: Charging the HOTO Laser Measuring Tool.
This image illustrates the USB Type-C charging port on the device, showing a cable connected for charging.
4.2 Installing the Mi Home App
For full functionality, download and install the Mi Home app on your smartphone or tablet. The app is available on both iOS and Android app stores. Search for "Mi Home" and follow the on-screen instructions for installation and account creation.
4.3 Pairing with the Mi Home App
- Ensure Bluetooth is enabled on your smartphone.
- Open the Mi Home app and log in.
- Power on the HOTO Laser Measuring Tool by pressing the main button.
- In the Mi Home app, tap the "+" icon to add a new device. The app should automatically detect the laser measuring tool.
- Follow the app's prompts to complete the pairing process.

Figure 3: Mi Home App Integration.
This image displays various features of the Mi Home app, including real-time data sharing, photo integration for measurements, and floor plan creation.
5. Operating Instructions
5.1 Basic Measurement
- Power on the device by pressing the main button. The OLED display will light up.
- Point the laser beam at the target surface.
- Press the main button again to initiate the measurement. The distance will be displayed on the OLED screen within 0.2 seconds.

Figure 4: Laser Beam for Measurement.
This close-up image highlights the laser emitter of the tool, demonstrating its function for timely and accurate measurements.
5.2 Measurement Modes
The device supports two measurement reference points:
- Front-based mode: Measures from the front edge of the device. Ideal for free measurements.
- Tail-based mode: Measures from the rear edge of the device. Ideal for edge measurements (e.g., from a wall).
To switch between modes, use the Mi Home app. This setting is managed within the app interface.

Figure 5: Two Modes of Measurement.
This diagram illustrates the difference between front-based and tail-based measurement modes, showing how the device calculates distance from different reference points.
5.3 Using the Mi Home App for Advanced Functions
- Real-time Data Sharing: Measurements are automatically synced to the app.
- Data Storage and Management: View, organize, and name your measurements within the app.
- Floor Plan Drawing: Create and edit floor plans with integrated measurements.
- Photo Export: Assign measurements to photos for visual context and easy sharing.
- Unit Conversion: Switch between meters (M), inches (in), and feet (Ft) directly in the app.
Video 2: Smart and Compact Features of the HOTO Laser Measuring Tool.
This video showcases the compact design and smart features of the HOTO Laser Measuring Tool, including its Bluetooth connectivity and integration with the Mi Home app for advanced measurement and data management.
6. Maintenance
- Clean the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Ensure the charging port is free from dust and debris.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on | Low battery | Charge the device fully. |
| Inaccurate measurements | Obstructed laser beam; incorrect measurement mode; reflective surface | Ensure clear path for laser; check/change measurement mode in app; use a non-reflective target if possible. |
| Cannot connect to Mi Home app | Bluetooth off; device not in pairing mode; app issue | Ensure Bluetooth is on; restart device and app; try re-pairing. |
| OLED display not clear | Environmental conditions (e.g., bright light) | Move to a less brightly lit area for better visibility. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | HOTO |
| Model | QWCJY001 |
| Measuring Range | 0.16 ft to 98 ft (0.05-30m) |
| Accuracy | ±1/16 inch (±2mm) |
| Measurement Speed | 0.2 seconds |
| Display | OLED Screen |
| Connectivity | Bluetooth (Mi Home App) |
| Battery Life | Approx. 1000 measurements per charge |
| Charging Port | USB Type-C |
| Laser Class | Class 2 |
| Water Resistance | IP54 (Waterproof) |
| Material | Rubber |
| Dimensions (LxWxH) | 2.87" x 1.3" x 0.67" |
| Weight | 0.09 Pounds |
9. Warranty and Support
HOTO provides a standard manufacturer's warranty for this product. For detailed warranty information, please refer to the warranty card included in your package or visit the official HOTO website. For technical support, troubleshooting assistance, or warranty claims, please contact HOTO customer service through their official channels.
Official HOTO Store: HOTO Tools Amazon Store