Underground Sensor, High Sensitivity Sensor, Backwall Digital Detection, LCD Battery Operated Electric ToolFeatures: -Easy to find the stud center -Accurately locates hidden metal pipes, live wire,stud and wooden frames -Detects metal up to 76mm depth -Detects voltage up to 76mm depth -Detects wood and metal stud up to 38mm -LCD screen with backlight -Auto calibration metal, voltage and stud detection -Audio and visual indication(Beep sound reminding and easy-read LCD display) -Auto shut off function -Operated by one piece of 9V battery (battery not included)Specifications: -3 Detector modes: Stud Scan ModeMetal Scan Mode and AC Wire Scan Mode -Detects metal up to 76mm depth -Detects voltage up to 76mm depth -Detects wood and metal stud up to 38mm -Color: Black, yellow -Operating temperatue/humidity: -20 to 50 -Power supply: 1 9V battery(not included).Package: 1 x 3 in1 detector 1 x User manual