Power Probe PP401AS Power Probe 4 Automotive Circuit Tester, Colour LCD Menu, Supplies Power/Ground, Multi-Mode Diagnostics (Injector, Ohmmeter, Continuity), AC-RMS/Frequency/Pulse Width, 12-24V

Advanced Power Probe circuit tester that supplies battery voltage or ground to activate components, with clear audible and visual feedback to speed up functional testing on and off the vehicle. Multi-function diagnostics in one tool: voltage and polarity testing, continuity checks, testing lights and connections, plus component activation to help pinpoint faults without swapping meters. Signal and circuit modes for deeper troubleshooting: fuel injector test mode, frequency mode, ohmmeter feedback, and open & short modes for tracking circuit conditions during repair work. Built for workshop conditions with an easy-to-read colour LCD and intuitive menu navigation, plus active LED lighting to illuminate the workspace while probing. Designed for 12-24V systems and includes a self-resetting thermal 8 amp circuit breaker plus bad ground indication to help check ground contacts and reduce the risk of overload during testing.