Klein Tools Test Kit includes the NCVT1P Non-Contact Voltage Tester and RT205 GFCI Receptacle Tester. The Non-Contact Voltage Tester detects standard voltage in cables, cords, circuit breakers, lighting fixtures, switches, non tamper-resistant outlets and wires. The GFCI Receptacle Tester detects the most common wiring problems in standard receptacles.Features Receptacle tester is designed to detect the most common wiring problems in standard receptacles: Open ground, reverse polarity, open hot, open neutral, hot/ground reversed High intensity, bright green LED indicates the tester is operational and aids in illuminating the workspace NCVT1P: Green LED Indicates Power On; Red LED Indicates Voltage Detected with Audible Beeps; Not Recommended for Tamper-Resistant Outlets Kit comes with NCVT1P Non-Contact Voltage Tester, RT205 GFCI Receptacle Tester, Instructions, and all required batteries When voltage is detected, a high intensity, bright red LED illuminates and a beeping sound is generated Auto power-off feature conserves and extends battery life 50 to 1000V AC power operating range allows broad application Non-Contact Voltage Tester detects voltage in cables, cords, circuit breakers, lighting fixtures, switches, outlets, and wires Voltage: NCVT1P - 50 - 1000V AC; RT205 - 110 - 125V Frequency: NCVT1P - 50 - 500 Hz Pollution Degree: 2 Drop Protection: 6.6 ft (2 m) Overall Length: NCVT1P - 5.5 in (14 cm); RT205 - 3.36 in (8.5 cm) Overall Width: NCVT1P - 1 in (2.5 cm); RT205 - 1.59 in (4 cm) Overall Height: NCVT1P - 0.72 in (1.8 cm); RT205 - 1.24 in (3.1 cm) Weight: 0.26 lbs (118 g) Depth: 8.66 in Material: Polymer Body and Electronic Components Type: Voltage Tester Pen and GFCI and Standard Receptacle Tester Application: Non-Contact Detection and Testing of AC Voltage; Determine Wiring Condition in Outlet Batteries: 2 x AAA 1.5 Volt Standard: NCVT1P: CAT IV 1000V; RT205: CAT II 125V DownloadsSafety Data SheetSpec SheetInstructionsNCVT1PKIT_manual_web.pdf