This digita LCD circuit tester is perfect for use on cars, truck, boats, trailers, motorcycles, airplanes, and snowmobiles circuit fuse battery voltage test. Use to check electrical circuits and accessories on all 3-48 voltage DC systems. portable, ergonomic design for easy use in confined areasUse this car voltage digital tester to check the condition of the car circuit and cable system at each system without going toexpensive mechanics. The digital voltage tester connects between the clip plug in seconds to detect bad cindition cable and circuit connections, defective points and bad cables or connections. connects in seconds. *When the car fog lights are not blinking;*When the reversing lamp are not lighting;*When the turn signal lamp are not blinking;*When the car headlights are not lighting;*When the cigarette lighter does not working;*When the wiper motor does not working;*When the horn/speaker is not working;*When Air conditioning is not working;*When the car does not igniting;*When the sunproof won't opening;*When the car navigation/radio/ dvd player is not working;In any of the above situations, you need one LCD digital power probe test pen to detect the car fuse box, it can help you find faults and solve problems quickly. Features: Heavy Duty Construction, large size tester body made with high quality ABS, heavy duty, shatter-proof, durable than normal test light. 5-48v Widely Use Circuit Tester,designed to check vehicles electrical circuits, automotive battery, circuit integrity and other 5-48 volt wiring and circuits. Made with sharp super hard steel probe for piercing wires, also for hard to reach areas. Portable 140 inch long enough PU spring wire cord and large size alligator clip for easy and one hand operation. Strictly tested long service life test light bulb, it can make it serve you faithfully for years. 100% customer satisfaction service. Specifications: Voltage: DC 3-48V Current Draw: 3-20V(17mA), 20-36V(10mA) Main material: iron alloy, ABS Plastic Spring Wire length: 3m / 10ft/140 inch Item weight: 100g / 3.53oz Package weight: 200g / 4.23oz Item size: 22 * 2.6 * 2.6cm / 8.66 * 1.02 * 1.02oz Package size: 25 * 10 * 2cm / 9.84 * 3.94 * 0.79in Package List:1 * LCD Display Electric Circuit VoltageTester