- Multi-Function Automotive Circuit Tester: This versatile tool is essential for any car owner or professional mechanic. It performs car circuit testing, continuity checks, voltage polarity assessments, light inspections, motor diagnostics, short circuit tracing, and ground fault testing. With precise results, it simplifies a variety of automotive maintenance tasks. - Easy Operation: To use the circuit tester, disconnect the tester connection wire. Attach the red clip to the battery's positive terminal and the black clip to the negative terminal. The blue digital display will show the current battery voltage. If connected inversely, the voltage will not display, but the indicator light will still illuminate, ensuring you can check connections easily. - Built-In Flashlight: Designed with convenience in mind, the probe tester features a built-in flashlight. Simply connect the red and black clips to the battery electrodes for efficient testing in low-light conditions. This dual functionality allows it to serve as both a testing device and a portable light source. - Reliable Performance: The power circuit probe tester includes an LCD display that clearly shows voltage readings from 3.5 V to 36 V, making it suitable for a wide range of automotive applications. With long leads measuring 14.7 feet, it provides easy access to power and ground connections, whether you’re testing under the dashboard or elsewhere. Please note: it is not suitable for AC use or voltages exceeding 36 V to prevent damage. - Comprehensive Package: The product comes with the tester, necessary accessories, and an instruction manual. It is backed by a 1-year warranty and a 30-day exchange policy, along with technical support for any quality-related issues. - Practical Use Scenarios: 1. Conduct routine battery checks to ensure optimal performance and prevent unexpected failures. 2. Diagnose electrical issues in your vehicle, such as identifying faulty wiring or components. 3. Utilize the flashlight feature for convenient inspections in dimly lit areas of your car.