About the product 1. Brand new and high quality 2. Be used for 6V-24V electrical systems. 3. Ideal for detecting power. 4. To find live wires; find broken wires 5. To test fuses. 6. To test light sockets (brake lights, back-up lights, etc.) 7. Faulty sockets, connections, fuses, broken wires and more. 8. Easy to use and improve work efficiency, perfect for automotive use.