Features: 1. **Wide Application Range:** The circuit tester can be used to test conductivity, voltage polarity, lights, and motors. It can also track and locate short circuits and test for poor grounding contacts. 2. **Long Test Line:** The cable length is approximately 16 feet, allowing easy testing of any electrical system. 3. **Short Circuit Protection:** The unit has a short circuit protection function, which can immediately detect poor grounding contacts. 4. **Easy to Operate:** After simply connecting the device to the vehicle's battery, automotive technicians can apply positive and negative currents from the battery to the tip by toggling the power switch forward or backward. 5. **Comprehensive 6-24V DC Test Kit:** Do not use with AC voltage. Operating Instructions: 1. Unfold the cables of the device. 2. Clip the red clip onto the positive terminal of the vehicle battery. 3. Clip the black clip onto the negative terminal of the vehicle battery. Specifications: * Color: Red * Working Voltage: 6-24V DC * Cable Length: 16 ft * Overload Protection: 8A (When the current exceeds 8A, the item will automatically disconnect the current.) * Packaging Size: 26.5 x 9 x 4 cm * Packaging Weight: 320g Packing List: * 1x Circuit Tester 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. Sold by-YJL official store