Electronic AC/DC Voltage Tester 12 to 240V AC, 1.5 to 24V DC

Klein Tools ET40 is an Electronic AC/DC Voltage Tester. It features indicators for positive and negative DC polarity, and tests DC voltages as low as 1.5V. It tests AC voltages 12-240VAC. Excellent for checking, verifying or troubleshooting common residential electrical wiring in electrical outlets, light fixtures, doorbells and more. It operates on 2 x AAA batteries. Voltage Tester for AC voltages from 12V to 240V AC at four useful levels aligned with commonly used residential voltages Tests DC voltages from 1.5V to greater than 17 to 24V at four useful levels aligned with commonly used DC voltages Bright LEDs illuminate to indicate the type and level of voltage detected Built to withstand a 9.9-Foot (3 m) drop Indicates polarity when measuring DC voltages Powers off automatically after approximately 2 minutes of non-use to conserve battery life