12V Car Relay & Voltage Tester

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This universal 12V car relay and voltage tester is designed for quick and easy diagnosis of automotive electrical systems. The tool helps check relay performance and battery voltage status with clear LED indicator lights for fast visual readings. It is suitable for testing most 12V vehicle relays and assisting in troubleshooting electrical issues. Compact and portable, it is ideal for use in garages, workshops, and roadside diagnostics. The simple plug-and-test design allows convenient operation without complex setup. Perfect for mechanics, electricians, and car owners performing routine vehicle maintenance or electrical system checks.