- Multifunctional Circuit Tester : This versatile power circuit probe tester is designed for various testing needs, including voltage measurement, positive/negative electrode detection, component activation, continuity and grounding tests, trailer light and connector diagnostics, short circuit tracking, and overload protection. - Premium Quality Materials : Constructed from high-quality ABS material, this automotive circuit tester is insulated, moisture-proof, heat-resistant, and built to last. The high-sensitivity stainless steel probes ensure quick and precise testing, making automotive diagnostics straightforward. - LED Indicator & Buzzer Alert : Equipped with a clear LED indicator and audible buzzer, this electric circuit tester facilitates accurate identification of electrical system issues. The device automatically disconnects the current and sounds an alert if it exceeds 8A, ensuring safety during operation. - User-Friendly Design : The intuitive power switch, along with a 16ft extended detection cord, large crocodile clip, and extended steel probe, allows for convenient one-handed operation. Its compact size makes it easy to store and transport, making it a must-have tool for automotive work. - Practical Applications : Ideal for mechanics diagnosing faulty wiring in vehicles, troubleshooting power issues in trailers, or performing maintenance checks on electrical components. This tester enhances efficiency and accuracy, ensuring that you get the job done right every time.