Wide range of applications: The EM285 circuit tester can be used to test continuity, polarity of voltage, check lamps, test electric motors, trace and locate short circuits, and test for faulty ground connections. Long test lead: The 16 ft cable allows for easy testing of various electrical systems. Short-circuit protection: Built-in protection feature that helps prevent damage during testing and enables quick detection of poor ground contacts. Easy operation: Simply connect the unit to the vehicle's battery; technicians can direct battery current to the probe tip by toggling the power switch forward or backward. Comprehensive 6-24V DC test kit: Designed for use with DC voltage systems only. Do not use on AC voltage. Operating instructions: Unroll the unit's cable. Attach the red clip to the positive terminal of the vehicle's battery. Attach the black clip to the negative terminal of the vehicle's battery. Operating voltage: 6-24V DC Overload protection: 8A (automatically disconnects when current exceeds 8A) Color: Black and red Material: Plastic and metal Package contents: 1 x Circuit tester Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting and display settings may cause slight variations in color between the product image and the actual item. Measurement may vary by +/- 1-3 cm.