Features: Effortlessly check battery health and relays functionality in your vehicle. Essential diagnostics tool for any car owners or mechanic. Portable: Compact and lightweight design allows for easy storage and transport. Keep this vehicle battery tester handy for on-the-go diagnostics. Used for: Automobile relays that can detect 12V, 24V four-pin, five-pin. EASY TO USE: The tester will automatically detect the pin position, the release time of the actions, and the consistency of the relays in each test phase. If the tester lights up the green-LED light, the relays is normal; if the red LED light is on, the relays is abnormal. The relays pullers makes it easy to remove the relays to be tested. SIMPLE AND EFFECTIVE: With our patented design this relays tester will give you the results you need quickly and easily. A red light means that the relays is bad, and a green-light means the relays is good! Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Size: As picture show Applicable pin: 5 pin/4 pin Aligator-clip opening size: 2.1cm/0.82incH Battery detection: 11V~25V Voltage-Alligator clip length: 42cm/16.54inch Product accessories list: Relays detector, Positive and negative alligator-clip, Manual, Color box packaging Package List: 1x 12-24V Car Relays Tester