Voltage/Metal/Wood Stud Detector - Finds wood, metal studs and joists behind walls, floors and ceilingsVoltage/Metal/Wood Stud Detector features include: DCV: 6.6V/66V/660V/1000V ±(1.0%+5) ACV: 6.6V/66V/660V ±(3.0%+5) Resistance: 20O/200O/2kO/20kO/200kO ±(3.0%+10) Display: 6600 Counts Auto RangingAuto Power OffTrue RMS for AC Voltage AC CurrentMax/MinDAR/PI for Insulation ModeCOMPARELockBacklit DisplayLow battery displayWireless APP ConnectionOrder Qty of 1 = 1 Piece Below is more info on our Voltage/Metal/Wood Stud Detector