The 12V Automotive Relay Tester is a versatile tool designed for testing 4/5 pin LED car diagnostic relays. Its clip-on mounting style makes it convenient to use, while the indicator light provides clear visibility of the testing results. Suitable for both interior and exterior applications, this power relay tester is heat-resistant and offers wire protection for added safety. With smart home compatibility and a universal application range, this reliable tool is essential for automotive, industrial, and commercial use. Made from ABS/plastic, brass, and copper materials, this tester ensures accurate and efficient testing of your electrical equipment.