3 In 1 Stud Finder Wire Metal Wood Find They Behind Wall

Material:ABS Detection sensitivity (depth): up to 20 mm/ 0.79 in 1. The unit needed to be calibrated before detecting the object. 1 x Detectors LED light: green and red Power supply: 9V 6F22 battery (not included) Locates the edges of wood or metal studs up to 3/4 inch (20 mm) deep. tools for the home and decoration. 2. Detection depth and edge detection can vary due to content of materials wall texture paint etc. 3. If the unit will not be used for an extended of time take out the battery from the unit. This sensor can be used to detect wall studs metal pipes and electrical wires. The ergonomic design makes it comfortable to use. It will remind you with the sound signal and lighting when it detects wall studs metal pipes and electrical wires. stud metal and live AC wire auto calibrated is a good tool when you decorate your home. Size: about 140x60x25 mm/ 5.51x2.36x0.98 in