Multifunctional Circuit TesterThe power circuit probe tester functions such as testing voltage, detecting positive/negative electrodes, activating components, testing continuity and grounding, testing trailer lights and connectors, tracking and locating short circuits, and overload protection. High-quality MaterialsThe automotive circuit tester uses high-quality ABS material, which is insulated, moisture-proof, heat-resistant, and durable. Equipped with high sensitivity stainless steel probes, it helps you quickly and accurately complete automotive circuit testing. LED IndicatorThe electric circuit tester has added LED indicator light design and buzzer prompt design, which can help you accurately identify automotive electrical system problems and quickly complete automotive circuit diagnosis. When the current exceeds 8A, this item will automatically disconnect the current and emit a buzzer sound. Easy to UseThe power switch is easy to operate, paired with 16ft extended detection cord, a large-sized crocodile clip, and an extended steel probe, making it easier to operate with one hand. Compact and portable, it is an indispensable automotive equipment. Wide ApplicationThe multifunctional electrical tester is widely applicable to all 6V-24V vehicles, trucks, ships, trailers, and motorcycles. (Note: Do not use under AC voltage.)