Automotive 6V 12V 24V Electrical Tester Voltage Pen with LCD Screen, Polarity Test, Flashlight, Car Fuse Tester -

Easy to use and wide application: The logic probe features a wide, sturdy alligator clip for easy one-handed operation. The sharp stainless steel probe has a protective rubber tip for piercing wires, even in hard-to-reach areas. This car tester is widely used as a voltage tester, car fuse tester, car battery tester, and probe tester, perfect for a variety of cars, trailers, vans, RVs, motorcycles, boats, etc. Three operating modes: The voltage tester is designed with a switch and a 12V 5W test bulb, allowing you to easily change the operating mode. You can choose to use the LED digital display and the bulb simultaneously, or you can select one of them to accurately test the voltage and diagnose a faulty battery or fuse circuit. LED Digital Display and Test Bulb: The car electrical tester features a real-time voltage display for quick and accurate readings of the current voltage. Additionally, the brightness of the bulb at the tip of the circuit probe pen changes with the voltage strength, allowing you to quickly pinpoint power circuit faults. Powerful Circuit Tester: The Kaisal automotive circuit tester is suitable for all 5-30V automotive electrical systems. It can be used for polarity identification, voltage testing, fuse detection, LAN circuit testing, ground fault verification, short circuit tracing and location, pulse signal testing, and more. This probe tester will help you trace problematic wires easily and accurately. 【Polarity Tester and Frequency Prediction】 The car fuse tester quickly distinguishes positive and negative polarity using the red and green LEDs on its built-in indicator lights. When the pen is connected to a 5-30V AC signal, the frequency range can be estimated on the digital display. It can be used to measure fuel injector signals, spark plugs, crankshaft sensor signals, etc. Precautions when using: