Features 1、High Accuracy: This stud detector is equipped with an upgraded sensor chip. It can accurately and quickly locate studs, metal, pipes and live AC wires concealed behind walls, floors and ceilings. 2、Hook And Loop Fastener Design: The hook and loop fastener on the back of the wall detector protects the product from wear and tear and makes the movement more stable. Whether you're a professional, a housewife or a DIY enthusiast, you'll love this practical and convenient helper. 3、Multiple Modes: The wall detector has multiple modes, and you can shift to the appropriate mode to help you accurately locate the center and edges of wood, joists or beams, live AC wires and deeper metal in walls. 4、Indicator Alerts: With automatic calibration and wire warning indicators, this wall detector automatically calibrates before use to provide maximum reliability and accuracy for the user, greatly reducing errors in the application. 5、Easy To Carry: This wall detection of small volume and light weight, can be used hand held, very convenient and flexible, while out of work is also very convenient to carry. Specification Item Type: Wall Detector Model: TCY3 Material: ABS Power Supply: 1 Lithium Ion Battery 300mAh ( Built In ) Maximum Detection Depth Of Wall: Contains Ferrous Metal: Approx. 100mm / 3.9in Nonferrous Metal ( Copper ): Approx. 80mm / 3.1in AC Detection: Approx. 40mm / 1.57in Copper Wire: Approx. 40mm / 1.57in Wood ( Foreign Object ) Detection: Approx. 38mm / 1.5in Infrared Distance Measuring: Approx. 40M / 131.2ft Voice Broadcasting: Yes Data Storage: 30 Groups Working Temperature: Approx. 0-40℃ / 32-104℉ Use Ambient Temperature: Approx. -10℃- +40℃ / 14-104℉ Storage Temperature: Approx. -20℃- +60℃ / -4-140℉ Package List 1 x Wall Detector 1 x Hand Strap 1 x Charging Cord 1 x Storage Bag 1 x Manual