Features: Wide Application: The circuit tester can be used to test continuity, test voltage polarity, check lights, check motors, trace and locate short circuits, test poor ground contact, etc. Long Test Lead: The cable length is about 16 feet, allowing you to easily test any electrical system. Short Circuit Protection: The unit has short circuit protection function, which can instantly detect poor ground contact. Simple Operation: After simply connecting the unit to the vehicle's battery, the automotive technician can conduct the positive and negative current of the battery to the tip by shaking the power switch forward or backward. Comprehensive 6-24V Test Kit: Do not use under AC voltage. Operation Instructions: Unfold the cable of this unit Clip the red clip on the positive terminal of the vehicle's battery Clip the black clip on the negative terminal of the vehicle's battery Specifications: Color: Red Operating Voltage: 6-24V Cable Length: 16ft Overload Protection: 8A (When the current exceeds 8A), this item will automatically disconnect the current. ) Package size: 26.5 * 9 * 4cm/10.43*3.54*1.57 inches Package weight: 320g Packing list: 1 * Circuit tester