non contact AC Voltage Detector 100v-600v 1,For electrical testing 2,Non-Contact 3,Voltage sensitivity:100V-600V AC Electric Test Pen 1,Unique design on the touch point of test pen effective in electric test operation.2,Tempered steel shaft is ideal as a mini screwdriver.3,Wide and thick handle comfortably to grasp and easier to operate.4,Unique design model and perfect technique to make sure ...