High Sensitivity Wire Detector: AC wire warning flags will appear on the LCD screen whenever live wires are monitoring in three detection modes. The exposure column will rise as the center of the wood stud detector's approach element, and the site of the highest column will be the center of the studs. The beep sound will remind you when you have found the target. AUTOMATIC CALIBRATION: Before detecting, please hold down the scan button for 1-2 seconds, and the wall metal detector will be calibrated. The beep sound will remind you when the work is finished. You may need to recalibrate your material detector if the button was accidentally released at the beginning or you think it needs to be recalibrated during the process. EXCELLENT BACKLIT DISPLAY: Metal detector features with LCD backlight, providing a clear view even in low light conditions, which indicates detection mode, center pinpointing, low battery indication. Audio indication, with beep sound to remind. ERGONOMIC DESIGN: Designed with soft grips to provide comfort and better control of the tool. EASY TO READ: It is equipped with a green backlit display, an audible beep sound and a visual indicator for accurate detection.