Thexton 137 Power-On Circuit Tester

High impedance tester is safe (in test mode) for computer circuits LEDs provide visual indication of continuity Red or green LED shows polarity at probe

For use on 12V and 24V systems, Thexton's 137 Power-On Circuit Tester tests function and operation of electrical motors, solenoids, relays, lights and more by supplying power or ground. High impedance tester is safe (in test mode) for computer circuits. LEDs provide visual indication of continuity. Red or green LED shows polarity at probe. Includes Power-On Circuit Tester - 137 Specifications Compatible With: 12V / 24V Systems