Car Battery Tester 12V Automotive Relay Detector LED Indicator Battery Capacity Checker Car Diagnostic Tool Bullet points: 1. This relay tester is a quick testing tool designed to assess automotive relays and inform you of their status. 2. By connecting the vehicle's continuous battery (11V-15V) to the relay coil, the detector can accurately evaluate the relay's contact function. The tester will monitor contact data, closing time, relay inertia, and other parameters during each testing phase. 3. A green light indicates a successful test, while a red light denotes a failure. It is developed to evaluate the condition of automotive relays and ensure proper control of their operation. 4. The device requires a 12V vehicle battery, with a voltage range between 11-15V. Ideally, the coil resistance should exceed 20 ohms. 5. It offers a convenient and straightforward diagnostic method, making it time-efficient and budget-friendly. With its compact size and structure, it is easy to transport and can be used for testing in various locations. Name: Relay Tester Color: black and red Material: plastic and metal Voltage: 12V Size: 13x6.8x3cm Packing list 1* Relay tester 1* Instruction Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-dadangjia