Feature: 1. ACCURATE SMART SENSOR: This stud detector is equipped with an upgraded sensor chip to accurately and quickly locate studs, metal, pipes and live AC wires concealed behind walls, floors and ceilings 2. DURABLE AND STABLE: The back of the stud detector has a hook and loop design that protect the product from wear and tear and makes the movement more stable 3. WIDE APPLICATION: Whether professionals, housewives or DIY enthusiasts, will love this practical and convenient helper 4. FLEXIBLE TO SWITCH: Depending on your needs, you can switch the electronic stud detector to the appropriate mode to help you accurately find the center and edge of wood, joists or beams, live AC wires, and deeper metal in the wall 5. AUTOMATIC CALIBRATION AND WIRE WARNING INDICATORS: The stud finder is automatically calibrated before use to provide the user with maximum reliability and accuracy, greatly reducing errors in applications Specification: Item Type: Stud Finder Wall Scanner Model: TCY2 Material: ABS Power Supply: 1 x Lithium ion Battery 300mAh, Model: None Charging Voltage: DC 5V ≥500mA Maximum Detection Depth of Wall: Ferrous Metal: Approx. 120mm / 4.72in Non Ferrous Metal(copper): Approx. 100mm / 3.94in AC Detection: Approx. 50mm / 1.97in Copper Wire: Approx. 40mm / 1.57in Wood: None Infrared Range: Approx. 40meter / 131.2ft Voice Announcement: Yes Data Storage: 30 Groups Operating Temperature: 0-40℃ Ambient Temperature: -10℃ ~ +40℃ Storage Temperature: -20℃ ~ +60℃. Package List: 1 x Wall Detector1 x Hand Rope1 x Charging Cable1 x Storage Bag1 x User Manual