Bright flashlight illuminates work area and may be used independent of NCVT-3P voltage detection function|Built-in test lead holder on back of ET45 tester holds the leads in one of two positions - one so that they are spaced correctly to test tamper-resistant US-style outlets and the other for convenient storage of the test leads|RT210 detects the most common wiring problems in standard and GFCI receptacles including open ground, reverse polarity, open hot, open neutral and hot/ground reversed|Receptacle tester works on GFCI outlets and confirms operation of the ground fault protective device|Voltage Tester NCVT-3P has dual-range capabilities to detect from 12 to 1000 V AC or 70 to 1000V AC for a broad variety of low-voltage or standard voltage applications|ET45 tests AC voltages from 28V to 240V AC at four useful levels aligned with commonly used residential voltages, and DC voltages from 32V to 330V at four common levels