- The electrical tester features a digital LED display for precise DC voltage readings, with an operating range of 5-90V DC. This versatility makes it suitable for most vehicle electrical systems, ensuring clear visibility in both bright and dim conditions, ideal for engineers and DIY enthusiasts alike. - Designed for convenience, this tester includes an alligator clip for easy one-handed operation. The 140-inch PU spring wire is resistant to heat and oil, allowing users to perform electrical tests anywhere around the vehicle with flexibility and durability. - Equipped with a stainless steel probe, the tester can pierce wires and access hard-to-reach areas. The insulated probe prevents accidental shorts, enhancing safety during use. The tester's body is made from high-quality, shatter-proof ABS, offering superior durability compared to standard electric test lights. - The circuit tester acts as a voltmeter with visual indicators. Simply connect the alligator clamp to the vehicle's positive or negative ground and touch the probe to the opposite side. The red light signifies a positive voltage, while a green light indicates a negative voltage, providing clear and immediate feedback. - Practical applications include diagnosing vehicle electrical issues, testing battery voltage, and checking wiring integrity. This reliable tool is essential for anyone working on automotive electrical systems, offering accuracy and ease of use with every test.