1. Versatile automotive circuit tester: power circuit probe tester the tester excels at voltage testing, polarity detection, component activation, continuity checking, and grounding. Circuit tester Ideal for diagnosing all 6V to 36V automotive systems, it can also trace shorts and test trailer lights and connectors 2. Construction 6 - 24v dc automotive electrical system tester: automotive electrical tester made of thick material, it comes with a 16 - foot test lead, large clips, and long steel probes, making one - handed operation easier. Automotive electrical system tester high - sensitivity stainless steel probes ensure accuracy 3. Buzzer Alert electric circuit tester: electrical system tester the tester is equipped with a buzzer to help quickly identify electrical problems. If the current exceeds 8A, the tester automatically disconnects and sounds an alarm, ensuring and accurate automotive circuit diagnosis 4. User - Friendly Design multifunctional car circuit tester: circuit tester It's simple - connect the red clip to the positive terminal and the black clip to the negative battery terminal. The blue digital display shows the current battery voltage. Test light the tester is small and easy to operate, making it a valuable tool for any automotive technician Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.