1. Introduction
The UNI-T UT387E Wall Scanner is an advanced multifunction detector designed to quickly and accurately locate various objects behind walls, floors, and ceilings. It can detect the edges and center of metal (ferrous and non-ferrous), studs, wooden beams, PVC water pipes, and live AC wires. Featuring a 2.4-inch color screen, voice broadcasting, and a lithium battery, this device is an essential tool for DIY enthusiasts and professionals alike, ensuring safety and precision in construction, renovation, and installation tasks.
2. Safety Information
Always read and understand all safety warnings and instructions before using the device. Failure to follow these instructions may result in electric shock, fire, and/or serious injury.
- Live Wire Detection: The UT387E indicates the presence of live AC wires in all detection modes. Always exercise extreme caution when drilling or cutting into walls, especially when live wires are indicated.
- Environmental Conditions: Do not operate the device in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
- Water and Moisture: Keep the device dry. Do not expose it to rain or wet conditions. Water entering the device will increase the risk of electric shock.
- Battery Safety: Use only the specified charging method. Do not attempt to open or modify the built-in lithium battery.
- Maintenance: Refer all servicing to qualified repair personnel. Servicing is required when the device has been damaged in any way.
3. Product Overview and Package Contents
3.1 Package Contents
Upon opening your UNI-T UT387E Wall Scanner package, please ensure all items are present and in good condition:
- UNI-T UT387E Wall Scanner
- USB Type-C Charging Cable
- User Manual (this document)
3.2 Device Layout
The UT387E features a user-friendly design with a clear LCD display and intuitive buttons:
- LCD Display: 2.4-inch color screen for visual feedback, target direction, and detection type.
- Power Button: To turn the device ON/OFF.
- Scan Button: Initiates and controls the scanning process.
- Mode Selection Buttons: For switching between different detection modes (e.g., metal, wood, AC).
- Type-C Charging Port: For recharging the internal lithium battery.
- Speaker: For voice broadcasting and audio alerts.
4. Specifications
The following table outlines the technical specifications of the UNI-T UT387E Wall Scanner:
| Feature | Specification |
|---|---|
| Model | UT387E |
| Wood Scanning Depth (Precision Mode) | 20mm / 0.8 inch |
| Wood Scanning Depth (Depth Mode) | 38mm / 1.5 inch |
| Metal Detection Depth | 100mm / 4 inch |
| Non-ferrous Metal Detection Depth | 80mm / 3.1 inch |
| Live Wire Alarm Accuracy | Live 110-220V, 50-60Hz, 50mm / 2 inch |
| Copper Wire (≥ 4 square mm) | 40mm / 1.6 inch |
| Automatic Calibration | Yes |
| Working Temperature | 0°C ~ 40°C |
| Storage Temperature | -20°C ~ 60°C |
| Working Humidity (Metal Mode) | 0-85% RH |
| Working Humidity (AC Mode) | 0-30% RH |
| Working Humidity (Wood Mode) | 0-60% RH |
| LCD Display | 2.4 inch color screen |
| Battery / Automatic Shutdown | 300mAh lithium battery, automatically shut down after 5 minutes of non-use |
| Battery Life | About 3000 single measurements (full power) |
| Voice Alert | Voice broadcast |
| Low Battery Reminder | Yes |
5. Setup
5.1 Charging the Battery
The UT387E is powered by a built-in 300mAh lithium battery. Before first use, or when the low battery indicator appears, charge the device using the provided USB Type-C cable.
- Connect the USB Type-C cable to the charging port on the side of the device.
- Connect the other end of the cable to a standard USB power adapter (not included) or a computer USB port.
- The battery indicator on the LCD screen will show charging status.
- Once fully charged, disconnect the cable.
6. Operating Instructions
Follow these steps for accurate detection:
-
Power On and Mode Selection
Press the power button to turn on the device. Place the device flat against the scanning surface. Use the mode selection buttons to switch to your desired detection mode (e.g., metal, wood, AC). The selected mode will be displayed on the LCD screen.
-
Calibration
Before each scan, it is crucial to calibrate the device. Press and hold the Scan Button (typically on the left side) while the device is flat against the wall. Continue holding until you hear a short beep sound, indicating successful calibration.
-
Scanning
After calibration, release the Scan Button. Slowly move the wall scanner along the wall surface in a straight line. Maintain constant contact with the surface. The device will provide visual and audio feedback.
-
Object Detection and Marking
When an object is detected, the device will beep continuously, and the LCD display will show the type of object (e.g., metal, wood, AC) and its approximate location/direction. The sound warning will become louder as you get closer to the target. Mark the location of the detected object with a pencil.
6.1 Detection Capabilities
- Metal Detection: Locates ferrous and non-ferrous metals, including rebar, pipes, and studs.
- Wood Detection: Identifies wooden studs, beams, and joists.
- AC Wire Detection: Detects live AC wires (110-220V, 50-60Hz) to prevent accidental contact.
7. Maintenance
- Cleaning: Wipe the device with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: For long-term storage, ensure the battery is partially charged (around 50%). Recharge periodically if not used for extended periods to maintain battery health.
- Avoid Impact: Protect the device from strong impacts or drops, which can damage internal components.
8. Troubleshooting
- Device does not turn on:
- Ensure the battery is charged. Connect the device to a power source using the Type-C cable and try again.
- Inaccurate readings or inconsistent detection:
-
- Ensure proper calibration before each scan.
- Move the device slowly and maintain constant contact with the surface.
- Check for excessive humidity in the environment, especially for wood and AC modes, as high humidity can affect performance.
- Ensure the scanning surface is clean and free from obstructions.
- No voice broadcast:
- Check if the voice alert feature is enabled (if applicable) or if the volume is set appropriately. Ensure the speaker is not obstructed.
9. User Tips
- Always Calibrate: For the most accurate results, calibrate the device by pressing the scan button while holding it flat against the wall before starting each new scan or changing locations.
- Slow and Steady: Move the scanner slowly across the surface. Rapid movements can lead to missed detections or inaccurate readings.
- Mark Your Findings: Use a pencil to mark the edges and center of detected objects directly on the wall for precise reference.
- Understand the Display: Pay attention to both the visual indicators on the LCD screen (showing target direction and type) and the audio alerts (louder sound indicates closer proximity).
- Multiple Passes: For critical applications, perform multiple scans from different directions to confirm the location and depth of hidden objects.
10. Warranty and Support
UNI-T products are manufactured to high-quality standards. For warranty information, technical support, or service inquiries, please refer to the official UNI-T website or contact your local distributor. Keep your purchase receipt as proof of purchase.
