This is a kind of fine quality digital wall detector, a metal wood stem center detector with detecting metal and electric wires functions. Multifunctional wall detector, metal detection, wood detection, wire detection, accurate detection, wide ranges of applications. The wall detector can detect metal, wood beams and live cables inside the walls, ceilings and floors (referred to walls, ceilings, floors for conventional concrete, tiles, wood panels, etc.). Features: Multifunctional wall detector, metal detection, wood detection, wire detection, accurate detection, wide ranges of applications. LCD screen design, accurate positioning, intuitive display, simple operation. Five-in-one detection mode, for detecting wood panels, plasterboard-type material wall within the center of the wood stalk, metal location and live wires, and with AC warning function. There are two gears to detect wood, 0.79in.(20mm) and 1.5in.(38mm), you can adjust it according to your demands. It can be used to detect metal pipe, the wall thickness is within 3.94 inches (100 mm). And also can be used to detect live wire inside walls, and the wall thickness is within 1.97 inches (50 mm). Applicable scenarios, the wall detector can detect metal, wood beams and live cables inside the walls, ceilings and floors (referred to walls, ceilings, floors for conventional concrete, tiles, wood panels, etc.). Specifications: Model: UT387E or UT387S or UT387LM (Optional) Material: ABS Wall Detection Function: Wood scanning depth(precision mode): 20mm Wood scanning depth(depth mode): 38mm Metal scanning depth: 100mm Non-ferrous metal scanning depth: 80mm Live wire alarm accuracy: Live 110-220V, 50-60Hz, 50mm Copper ware(andge 4mmandsup2 ): 40mm Auto calibration: Yes Ranging Function (Only UT387S or UT387LM has this function): Measurement Accuracy: andplusmn (2mmand5x10-5d) Unit: m or ftandin Measuring Range: 0.05-40m Automatic Laser Off: 20 seconds Storage Data: 30 groups Moisture Determination Function(Only UT387S has this function): Maximum Penetration Depth for Measuring Moisture: 8 mm. Moisture Measurement Range or Accuracy: 6 percent - 40 percent andplusmn 2 percent General Characteristics: Operating humidity: Metal mode: 0-85 percent RH AC mode 0-30 percent RH Wooden beam mode:0-60 percent RH Storage Temperature: -20-60 Drop Proof: 1m LCD: 2.4 inch color screen Auto power off: About 5min Battery: 1 x 3.7V 300mAh lithium battery Battery life: 3000 single measurements Shutdown current: 0 mA Audio alarm: Voice broadcast Low battery indication:Yes Item Size: 148 x 68 x 32mm or 5.83 x 2.68 x 1.26inch Item Weight: 159g or 5.61oz Packing Size: 180 x 107 x 57mm or 7.09 x 4.21 x 2.24inch Packing Weight: 261g or 9.21oz Packing List: 1 x Wall Scanner 1 x Cloth Bag 1 x USB Charging Cable 1 x Manual(English)