1Lightweight and portable, this wallmounted detector is cordless, small in size, and easy to carry around for measurement. 2The detector can easily detect wood, beams, metal nails, pipes or steel behind wall, floors or ceilings. 3Indicating signal design, this wall detector has LCD backlight display and sound indication, you can clearly know the thickness of the detection. 4Automatic calibration. This wall detector can automatically calibrate all detected objects with high detection accuracy. 5Low battery indicator, the wall-mounted detector will have a low battery warning screen to avoid the embarrassment of a dead battery. Item Type: Wall DetectorMaterial: ABSWeight: Approx. 245g / 8.6ozColor: BlackProduct Size: Approx. 164x75x34mm / 6.5x3.0x1.3inBattery: 1 x 6F22 9V Battery (Not Included)Scope of Application: Detect the center of wood and metal studs up to 1.5 inches (38 mm) ; Detect metal rebar up to 2.36 inches (60 mm) ; Detect AC live wires up to 2 inches (51 mm) in length Package List 1 x Wall Detector(Battery Not Included)1 x Manual Note Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.