About this item

• 【Why Need It】With the GODIAG probe tester, you can test for continuity/polarity/voltage and ground signals/Short&Open Circuit. And most importantly, you can also use the Power Circuit Probe to check switches, relays and the on-off of diodes, fuses and circuits, activating electronic components. This probe tester can assist you in tracing problem wires and locating breaking points.
• 【LED Indicator & Buzzer】When the dc circuit tester touches the positive pole, the LED should be red and the 'beep' will become sharp; when it touches the negative pole, the LED should be GREEN and the beeping sound will become smooth, which can help you quickly identify the positive and negative polarity of the vehicle cable and plug.
• 【Quick Self-Test & Overload Protection】Before you test a circuit or component, the tester can perform a quick self-test to ensure your tool is in good condition. If overloaded, the 10-amp circuit breaker within the circuit probe tester will trip and automatically disconnect the protection circuit. The circuit breaker is a valuable test tool as well as a safety measure to protect the tool from overload and make the product more long-lasting.
• 【Activate & Test Components】To use component activation with a circuit tester, you typically connect the tester to the circuit and then use the tester's controls to activate or control specific components, such as relays, solenoids, or actuators. By allowing you to activate or control specific components in a circuit, you can help diagnose problems more quickly and accurately, and make repairs more efficiently.
• 【Grounding Test & 20ft Long Test Lead】The electric probe circuit tester includes a ground prompt feature, with a green LED and buzzer indicating a good ground, while a red LED without sound indicates a bad ground. The tester comes with a 20-foot (6m) cable for testing various vehicles with DC circuits, making it simple to assess the entire electrical system.