This wall detector is made of durable ABS material and is practical and easy to operate. It can detect metals such as steel bars and copper pipes, as well as cables hidden in walls, ceilings, and floors. The device features a backlit LCD screen for an intuitive display and accurate detection. It is designed with a soft rubber grip for shock resistance. A large area sensor improves accuracy, and one-button operation simplifies use. The screen displays the distance to the detected object, and an audible buzzer indicates its location. Specifications: Origin: China Condition: New Main Material: ABS Color: Black Battery: 1 x 9V Battery (Not Included) Maximum Detection Depth: Ferrous Metal: 120mm Non-Ferrous Metal (Copper): 100mm Alternating Current (AC): 50mm Copper Wire (≥4mm²): 40mm Automatic Shutdown Time: 5 Minutes Operating Humidity Range: 0-85% RH in Metal Mode Operating Temperature Range: -10°C to +50°C Storage Temperature Range: -20°C to +70°C Use Time: Approximately 6 Hours Item Size: 147 x 68 x 27mm / 5.8 x 2.7 x 1.1in Package Size: 184 x 101 x 55mm / 7.2 x 4.0 x 2.2in Package Weight: 250g / 8.8ounce Packing List: 1 x Wall Detector 1 x Protective Bag 1 x User Manual