Lamp tester helps save you time, reduce costsPerforms 5 tests with 1 compact toolLamp test: Test bulb without removing from fixtureBallast test: Easily determine if ballast is workingNon-contact voltage: Quickly check for voltage presencePin continuity test: Tests if filaments have continuityBallast-type test: determine if ballast is electronic or magnetic without taking fixture apart, identify energy wasting ballasts