Automotive Relay Tester, 12V Electronic Automotive Relay Tester Auto Car Diagnostic Battery Checker Tool Jewelry Clasp Great to use simply as

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Automotive Relay Tester, 12V Electronic Automotive Relay Tester Auto Car Diagnostic Battery Checker Tool Jewelry Clasp Great to use simply asQuick Test Tool: To test automotive relays and let you know the status of automotive relays Convenient to Use: The tester observes the contact data, closing time, relay inertia at each test step, etc Easy to Use: If the relay is abnormal, the red LED will light up, it is normal for the green LED to light up Note: The car battery must be a 12V battery and the voltage should be between 11V and 15V The coil resistance is preferably greater than 20 ohms..