Features: Wide Application: Professional automotive circuit tester/circuit test light with 3V-6V-12V-24V DC testing range, ideal for checking various vehicles' electrical circuits, quickly checking automotive headlights, taillights, turn signal circuits, faulty sockets, fuse connections, and other wirings and circuits. Safe: Equipped with pure copper clip and insulation protective cover, which can better grip the body and screws, insulation protection against electric shock. Circuit board with line protection function, safer and more burn-resistant. Quality Made: Sharp stainless steel probe for piercing wires, also for hard-to-reach tight areas. Heavy-duty test light body constructed with high-quality ABS, shatter-proof, more durable than normal test lights. Convenient Use: High quality 1.8m long enough PU spring wire offers more flexibility, lighter and more durable than normal cable wires, convenient for use and storage, along with large size alligator clip for easy one-hand operation. Specifications: Type: Digital Electric Circuit Tester Voltage Range: 3V/6V/12V/24V DC Cable length: 0.6m-1.8m Bulb: 3 Watt Bulb Material of Handle: Insulative ABS Application: Automotive headlights, taillights, turn signal circuits, faulty sockets, fuse connections, and other wirings and circuits. Package Include: 1 x Voltage Circuit Tester