Circuit Tester, 3-120 V Digital Test Light LED Display Automotive Fuse Tester Polarity Indicate Dc Voltage Tester for Car Truck Circuit Fuse Testing Wiring Circuit Checking

• Wide Voltage Range (3-120V) : Ideal for automotive and household circuits, this circuit tester detects 3V to 120V DC, covering cars, motorcycles, trailers, and low-voltage wiring. Quickly diagnose short circuits, open wires, faulty fuses, relays, and broken connections in headlights, taillights, or turn signals.
• LED Polarity Indicator & Secure Clips: This car fuse tester Features bidirectional voltage testing with clear LED indicators (red for "+", green for "-"). The alligator clip ensures stable connections to positive/negative terminals, perfect for negative-ground or positive-ground vehicles.
• Durable & Flexible Design: This car electrical tester built with heat-resistant plastic and carbon steel probes, plus a retractable spring wire (2.8m max length) to reach tight spaces. Anti-bend tail design prevents wire damage, ensuring reliable long-term use.
• Fast, Accurate Diagnostics: This 12v test light includes a bright LED test light and digital display (3-120V models) for instant voltage readings. Easily check live circuits, continuity, and faulty sockets without guesswork—saving time on repairs.
• Compact & Essential: Lightweight and portable, this relay tester is a must-have for mechanics and DIYers. Use it for 12V/24V systems, household wiring, or troubleshooting blown fuses—all with safe, insulated handles for user protection.

Tips: When using an electric pen to measure electricity, measure intermittently, use the touch method, and do not power on for more than 3 seconds to avoid long power-on time to prevent burning the circuit board! SPECIFICATIONS -Product name: Circuit Tester -Test Range: 3V, 6V, 12V, 24V, 48V, 90V, 120V universal -Wire length: retractable spring wire, standard wire length 60 cm, can be stretched to 1.8 meters Test instructions: The clip clamps the negative pole, the pen tip measures the positive pole, and the digital display shows the voltage and the green light is on. The clip clamps the positive pole, the pen tip measures the negative pole, and the digital display shows a red light. When using, please measure intermittently, use the touch method, and do not power on for more than 3 seconds to avoid burning the circuit board. Wide Voltage Range (3-120V) Ideal for automotive and household circuits, this circuit tester detects 3V to 120V DC, covering cars, motorcycles, trailers, and low-voltage wiring. Quickly diagnose short circuits, open wires, faulty fuses, relays, and broken connections in headlights, taillights, or turn signals. LED Polarity Indicator & Secure Clips This car fuse tester Features bidirectional voltage testing with clear LED indicators (red for "+", green for "-"). The alligator clip ensures stable connections to positive/negative terminals, perfect for negative-ground or positive-ground vehicles. Durable & Flexible Design This car electrical tester built with heat-resistant plastic and carbon steel probes, plus a retractable spring wire (2.8m max length) to reach tight spaces. Anti-bend tail design prevents wire damage, ensuring reliable long-term use.