Multifunctional circuit tester for automotive electrical systems - This device checks electrical systems, continuity, polarity, grounding, and voltage detection, making it an essential tool for vehicle owners and technicians. Built-in flashlight - Equipped with a handy built-in flashlight for testing in low-light conditions. - It can also serve as an auxiliary light by connecting the clips to the battery terminals. Extended reach - Features a 5-meter long wire that easily reaches from the battery to the dashboard. - The LCD screen displays clear values for easy reading. Easy operation - To use, attach the red clip to the positive terminal and the black clip to the negative terminal. - The light activates and the battery voltage is shown in bright blue digits on the display. Practical applications - Diagnose electrical faults in cars, trucks, and other vehicles by testing circuits for continuity, polarity, and grounding. - Check battery voltage and monitor the charging system during maintenance or repairs. - Work in dim or confined spaces under the hood or inside the cabin, using the extended reach and built-in flashlight.