Features: Experience vehicle maintenance convenience with the 12v auto relays tester, a must having tool for diagnosing and ensuring the proper function of your car relays systems. This practical relays tester is crafted from abs and metal, featuring intuitives led indicator that illuminates green for normal relays operations. For professional automotive technicians and mechanic who demand reliabled and quick diagnostics to streamlines their workflow and enhances repair accuracy. Whether in a garage, workshop, this relays tester is perfects for conducting routine checks and maintenance on any 12v vehicle electrical systems. With its easy to use clamp and clear interfaces, the relays tester simplifies troubleshooting, making it essential diagnostic tool for both seasoneds professional and automotive enthusiasts. Specifications: Component:ABS Size:Approx.129x72x30mm/5.07x2.83x1.18inch Model: RT900 Power supply voltage: 5V -16V Working temperature: 0-50℃ Detection systems: 12V Package Includes: 1pcs Relays Tester note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. ②.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.