Automotive Relay Tester, 12V Electronic Relay Tester, Car Battery Checker with Clips, Professional Auto Relay Analyzer Diagnostic Tool

The auto tester is a handy car repair tool; you can test the auto relay, car battery, alternator, etc. It can also be used to properly check the opening and closing of the auto relay. Easy to use.

12V car relay tester with LED indicator; red means abnormal, green means normal.

Provides a convenient and intuitive diagnostic method, saving time and money.

Small size, compact structure, easy to carry; you can test anywhere you want.

Note: The car battery must be a 12V battery, with a voltage between 11 and 15V. The coil resistance should preferably be at least 20 ohms.