Automotive Relay Tester, 12V Electronic Automotive Relay Tester, Auto Car Diagnostic Battery Checker Tool

Quick Test Tool: For testing automotive relays and informing you of their condition.Convenient Use: The tester observes contact data, closing time, relay inertia at each test stage, etc.Easy to Use: If the relay is faulty, the red LED will light up; if the relay is faulty, the green LED will light up.Note: The car battery must be a 12V battery, and the voltage should be between 11V and 15V. The coil resistance should preferably be greater than 20 ohms.