Klein Tools Digital AC/DC Voltage and GFCI Receptacle Test Kit Model #ET40VP About This Product ET40VP Electrical Test Kit from Klein Tools is excellent for checking, verifying or troubleshooting common residential electrical wiring. The ET40 is an AC/DC Electrical Voltage Tester with AC voltage at 12V, 24V, 120V and 240V and DC voltage at 1.5V, 9V, 12V, and 17 to 24V covering the most commonly used residential voltages. RT210 Receptacle Tester detects the most common wiring problems in standard and GFCI receptacles: open ground, reverse polarity, open hot, open neutral, hot/ground reversed. Highlights Electrical test kit contains AC/DC voltage tester and receptacle tester to detect most common residential wiring problems Cat. No. ET40 tests AC voltage (12V, 24V, 120V, and 240V) and DV voltage (1.5V, 9V, 12V and 17 to 24V) at four common residential voltages Identifies and distinguishes between AC or DC voltage and indicates polarity when measuring DC voltages Includes built in test lead holders and convenient pocket clip for everyday carrying Cat. No. RT210 works on GFCI and standard outlets and indicates: open ground, reverse polarity, open hot, open neutral, and hot/ground reversed wiring conditions Nominal voltage of 110/125V AC at 50/60Hz in 3-wire outlet Both products have bright LCD's to indicate voltage/test results