The combination stud finder and voltage detector lets you know exactly what's behind the wall before you cut, drill or nail
With the 5-in-1 stud finder/voltage tester, you can locate wood, metal studs and power conduits behind the wall. The tester features an easy-to-read LED indicator and an audible buzzer alert. The device also has a 36 in. retractable tape measure and bright LED flashlight built in.