- Auto electric circuit tester - workmanship with smooth surface and no burrs; Vehicle Test Tool. Benefits: durable, safe handling, reduces risk of damaging connectors during testing. - Automotive test light - 2,6-32v voltage range; wide vehicle compatibility; car voltage meter. Benefits: supports 12V and 24V systems, enables quick voltage checks across most vehicles. - Car voltage tester - ergonomic design; comfortable grip; Car Digital Volt Meter. Benefits: comfortable use for extended testing, provides reliable voltage readings. - Car light tester - long and elastic spring cable allows you to operate easily; Circuit Tester with Indicator Light. Benefits: reaches tight spaces and awkward wiring, indicator light gives clear test status. Use scenarios - Quick 12V circuit checks in passenger cars to identify whether the issue is power supply, wiring, or ground. - Verify battery, alternator, and related circuits in 24V systems such as trucks or commercial vehicles using the volt meter. - Diagnose wiring in cramped engine bays or behind panels with the long spring cable, aided by the indicator light for fast confirmation.