AC/DC Voltage Tester

Klein Tools’ ET40 and ET45 Voltage Testers were designed as simple, easy to use testers for checking, verifying or troubleshooting common residential electrical wiring and devices such as outlets, light fixtures, doorbells, batteries and more! Bright LED’s illuminate to indicate voltage levels detected. Convenient features on both models include four levels of voltage testing, built-in test lead holders (for attached leads) and convenient pocket clip for carrying. The ET45 does NOT require batteries as it is powered by the source being tested! The ET40 (uses two AAA batteries) and features indicators for positive and negative DC polarity, and tests DC voltages as low as 1.5V.