EM285 6-24V Car Electrical Circuit Test Pen Voltage Tester Power Probe Automotive Tool Wide range applications: EM285 circuit tester can be used to test continuity, polarity of voltage, check lamps, electric motors, trace and locate short circuits, and test for poor ground connections. Long test lead: The cable length is approximately 16 feet, allowing easy testing of any electrical system. Short-circuit protection: The unit includes short-circuit protection and enables quick detection of faulty ground contacts. Easy operation: After connecting the unit to the vehicle's battery, a technician can apply positive or negative battery current to the probe tip by toggling the power switch forward or backward. Comprehensive 6-24V DC test kit: For use with DC voltage only. Do not use on AC voltage. Operating instructions: Unroll the 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 + Red Material: Plastic + Metal Package contents: 1 x Circuit Tester Note: Other items not included. Lighting and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.