General Tools MSV100 Stud/Metal and Voltage Detector SummerFun Multiple units can be stacked

Multiple units can be stacked for easy storage

Clean-out doors provide easy access for cleaning

Rapid release of any entrained air

it even works in water

General Tools MSV100 Stud/Metal and Voltage Detector SummerFun Multiple units can be stackedHighlights: Dimensions: 7. 1" x 3. 0" x 1. 2" (180 x 75 x 30mm) Big, bright backlit LCD Visual and audible indications Marking slot on top of unit Center arrow and beeper pinpoint edges Automatically compensates for wall thickness in all three detection modes In AC voltage mode, automatically compensates for distance to live wire Ideal for building contractors, carpenters, plumbers, HVAC R specialists, home inspectors, electricians, realtors, home