A series of three-in-one wall detectors have sensitive detection, accurate positioning, waterproof, dust-proof, and drop-proof protection, non-slip soft plastic bags, sturdy and drop-resistant, waterproof and dust-proof sensitive sensors, target center positioning, to ensure detection accuracy. Trapezoidal structure, ergonomic design, The groove design on both sides of the machine is convenient for measurement and realizes a comfortable grip of the model detector. Metal detection depth is up to 30MM, cable detection depth is 30MM, wood detection (level 3 detection distance) 1/2 (13MM) 1 (25MM) 3/2 (38MM) automatic shutdown for 3 minutes Working temperature -7~40C less than 70% Temperature storage -20~50C less than 85% Applicable battery: 9V battery (without battery) Product size: 155*69*30mm About error: The above data are all measured manually, there may be 1-3mm error. Batches are different. Some deviations are normal. Please refer to the actual product for details. Range Metal Detector Voltage Lead with Metal Detection Function Audible Alarm Backlight Display Real Time Display Quick Measurement Wire Detection Non-Slip Soft Rubber Waterproof Dustproof Plush Cushion