Relay Tester 12 Volt This 12-volt relay tester is a practical tool for quickly and accurately testing 4- and 5-pin relays in vehicles. It is equipped with clear LED indicators that show the relays status: green light for working relay and red light for faulty relay. The tester simulates real conditions to verify relay functionality, including coil activation and contact switching. It is compatible with common relay types and has a durable housing for long-term use. Voltage: 12V (1115V) Compatibility: 4- and 5-pin relays LED Indicators: Green (OK), Red (Fault) Dimensions: 110 × 58 mm Cable Length: 90 cm Certification: CE Easy to use: connect the tester to the car battery, select the relay type, insert the relay, and press the "TEST" button. The tester cycles the relay 10 times and displays the result via the LED lights. An indispensable tool for both professional mechanics and car enthusiasts who want to streamline troubleshooting and avoid unnecessary relay replacements.