Electronic ac/dc voltage tester, indicators for positive & negative dc polarity, tests ac voltages from 12v to 240v at 4 useful levels aligned with commonly used residential voltages, tests dc voltages from 1.5v to greater than 17 to 24v at 4 useful levels aligned with commonly used dc voltages, bright leds illuminate to indicate the type & level of voltage detected, built to withstand a 9.9' drop, indicates polarity when measuring dc voltages, powers off automatically after approximately 2 minutes of non-use to conserve battery life, catiii 250v, class 2, double insulation, ingress protection ip41 dust & water resistant, built in test lead holders on sides of tester, low battery, uses 2 "aaa" batteries, not included.