Wide application This electric circuit tester is designed for electrical testing and can diagnose and voltage, resistance, current, relays, switches, and lines. Its versatility makes it suitable for both professional mechanics and enthusiasts. Clear digital display Equipped with a definition LCD display, this tester provides clear and accurate readings of voltage levels. The digital display allows for easy and precise monitoring of electrical parameters, making troubleshooting and tasks more efficient. Convenient and portable With a compact main unit size of 260 x 40 x 28 mm and a 5meter test line, this tester is easy to carry and use. It comes in a packing box measuring 280 x 132 x 50 mm, helping keep all components organized and protected during storage and transportation. Reliable performance This tester operates at a voltage range of 624V DC, making it suitable for a wide range of models. Its LED indicators provide clear signals and reliable performance even in lowlight conditions. The tester is built with durable materials for longlasting use. Key benefits Quick, accurate diagnostics for multiple electrical parameters (voltage, resistance, current, relays, switches, lines) Easy to read voltage readings via the LCD display Long reach with a 5meter test line; compact, portable main unit Robust 624V DC operation with LED indicators for visibility in dim environments Use scenarios Automotive diagnostics: test 1224V DC vehicle electrical systems, including battery voltage, relays, and wiring continuity. DCpowered device : troubleshoot power supplies, battery packs, and DC circuits in 624V applications. Onsite wiring and component checks: verify continuity and operation of relays, switches, and lines in electrical panels or hobby projects.