features: 1. Accurate and fast: Using highly sensitive intelligent microsensor chips, it can accurately and quickly detect the edges and centers of metals, columns, beams, pipes, and live AC wires behind walls, floors, and ceilings. Fast and accurate detection saves users time and effort, making tasks easier to complete. 2. No need for cables, compact size, easy to carry. Users can use it anytime and anywhere without worrying about cables. Prevent accidental electric shock and ensure electrical safety in the home. 3. Detection signal: Equipped with LCD green backlight display and sound indication, users can clearly understand the detected thickness. 4. Automatic calibration: With automatic calibration function, it can automatically calibrate all detected objects with high detection accuracy. 5 Low battery indicator: At the same time, when the battery level is low, the detector will display a warning to remind the user to charge the detector in a timely manner. Project Type: Wall Scanner Material: PC, ABS Weight: Approximately 200g/7.1oz Battery Model: 1x9V Battery 6F22 (excluding battery) Operating Temperature: 0-40 Monitor: LCD Green Backlight Screen Product Size: Approximately 6.9x15.4x3cm/2.7x6.1x1.2in