Color: Black Silver4-in-1 Depth Detection Function: The wall stud wall detector includes four different scanning modes, namely wall stud scanning, depth mode, metal scanning and AC scanning.Backlit LCD Screen and Audible Warnings: The multifunctional wall scanner sensor has a backlit graphical LCD screen that displays many clues during the detection process, such as detection mode, signal strength, self-calibration, battery indication, audible warnings, etc.Ergonomics: The tool has a soft grip coating that provides a firm and comfortable grip, ensuring safe and comfortable handling and preventing slippage. The compact design ensures space-saving in the tool bag.Automatic Calibration: Once the stud finder has found material, the LCD screen displays the direction and the intensity of the buzzer indicates whether you are close to the target. With automatic calibration, place it flat on the wall, turn on the power button and press the "Scan" button to start calibration. Calibration is complete when the "beep" sounds and the screen display disappears. The stud edge will flash and beep. Ease of Use: The device has an LCD screen that displays the results clearly and clearly for easy and intuitive reading. When a live wire is detected, a beep will sound to alert the user. Note: This product does not include batteries.