Polarity and voltage indicator - When the probe contacts a circuit with the positive pole and the clamp is on the negative pole, the LED lights red to indicate voltage presence and correct polarity. This provides a quick visual check during testing. Versatile automotive tester - Designed for automotive electrical systems, functioning as an electrical circuit tester and a car digital circuit tester. It helps diagnose basic voltage presence and circuit activity in automotive setups. Ergonomic design - Features an ergonomic design and comfortable grip to enable easier handling and testing in tight or hard-to-reach areas of a vehicle. Simple operation - Offers straightforward use with clear results, making testing fast and uncomplicated for both professional technicians and DIY enthusiasts. Wide compatibility and range - Voltage range: 2,6-32v; broad vehicle compatibility; suitable as a car electrical tester for a variety of automotive systems. Use scenarios - In-vehicle checks: quickly verify power at battery terminals, lighting circuits, and ignition wires during routine maintenance. - Circuit troubleshooting: test wiring harnesses, fuses, and sensors to identify where voltage is present or absent. - Digital circuit validation: perform quick checks on car digital circuits to support diagnostics and repairs. Specifications and features at a glance - Function: electrical circuit tester with polarity indication via LED - Design: ergonomic, comfortable grip for automotive testing - Operation: simple, convenient use - Range and compatibility: 2,6-32v, wide vehicle compatibility - Applications: automotive electrical systems, car digital circuits, general car electrical testing