12V Relay Tester | 4- & 5-Pin Automotive Relay Tester

With this 12V relay tester, you can check vehicle relays in just a few seconds—without complicated troubleshooting. The tester is suitable for most 4-pin and 5-pin relays and reliably indicates whether a relay is functioning properly or should be replaced.

Ideal for workshops, DIY enthusiasts, and anyone who wants to quickly pinpoint electrical faults in a vehicle.

✔ Quick functional test for 12V automotive relays
✔ Suitable for 4-pin and 5-pin relays
✔ Simple LED status display of test results
✔ Connects directly to the vehicle battery via alligator clips
✔ Quick diagnosis without a multimeter
✔ Compact and robust housing
✔ Ideal for cars, vans, motorcycles, and workshops
✔ Saves time when troubleshooting

Ideal for

• Workshops
• DIY enthusiasts
• Vehicle diagnostics
• Electrical testing
• Relay testing
• Breakdown assistance
• Maintenance and repair

Technical specifications

Package contents

• 1× 12V relay tester incl. original packaging
• 2× Battery clamps (permanently attached)

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✔ Free shipping in Germany, Austria, and Switzerland

✔ 24/7 customer support

✔ Simple and quick processing of returns

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However, if for any reason you are not 100% satisfied, please contact us within 30 days and we will guarantee a customer-friendly solution.