Power Probe 4 Master Kit, Green POWER PROBE 4 . Automatic resetting 8 amp circuit breaker. 12 – 24 volt range. 23’ cable. Determine if motors, lights, fans, relays or circuits are operational on and off the vehicle by applying battery power or ground through the tool. Test continuity and resistance. Safely test computer circuits that turn on relays, solenoids, and motors. Catch voltage spikes and drops in circuits. Test computer sensors and pulse width modulated circuits. Measure alternator and sensor outputs to ensure proper operation.. Reads operating values of individual fuel injectors so technicians can compare them to spec.. ECT3000 . Traces short and open circuits, without having to remove panels, carpets, or moldings to expose wires.. Adjustable distance indicator allows for accurate detection. PPKIT04GRN