Features: Comprehensive 6-24VDC test kit: Do not use at AC-voltage. Long test lead: The cable is about 16 feet long and easily tests any electrical system. Short-circuit protection: The device has short-circuit protection function, can detect whether there is bad grounding immediately. Widely used: EM285 circuit tester can be used to test continuity, test polarity- of voltage, check lamps, check motor, track and locate short circuit, test poor grounding, etc. Simple operation: After connecting the device to the vehicle battery, the automotive- technician can conduct positive or negative battery current to the battery tip by rocking power switch- forward or backward. Specifications: Material: ABS-, Electronic Component Operation Voltage: DC6-24V Cable Length: 16ft Overload- Protection: 8A (When the current exceeds 8A, this item will disconnect- the current automatically.) Length: Approx. 26.5x9x4cm/10.43x3.54x1.57in Note: Operation Instrcutions: Unroll- the units- cable Clamp red clip to the positive terminal- of the vehicles battery Clamp black clip to the negative terminal- of the vehicles battery Package includes: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.