General description This 5 in 1 Stud Finder is a versatile multi-function wall scanner designed to accurately detect the center position of metal and wood rods, as well as AC wires and cables within walls. It features an HD LCD display for easy reading and an audio alarm for enhanced usability. Technical specifications Product Weight: 220 g Detectable wood and metal rods within wall thickness: 1 1/2" (38 mm) Detectable metal pipes with wall thickness: less than 3 inches (76 mm) Can detect live wires in walls with thickness: less than 3 inches (76 mm) Automatic correction function for all detection modes Powered by a 6F22 9V battery