Instant test results
Clear indicator lights show test results instantly, so you know right away whether a relay is functioning properly.
- Free shipping
- 14-day easy returns
- Secure checkout
- Quality guaranteed
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Why customers love it
Diagnose relay faults in seconds, not hours
This compact relay tester quickly checks the functionality of 4-pin and 5-pin relays, helping you diagnose electrical issues with confidence.
- Compatible with 12V automotive relays (4-pin and 5-pin)
- Includes battery clamp for direct power connection
- Clear indicator lights show test results instantly
- Built-in circuit detection for accurate diagnostics
- Ergonomic, handheld design for easy use in tight spaces
- Durable construction built for workshop or roadside use
Why you'll love it
Broad relay compatibility
Quickly checks the functionality of both 4-pin and 5-pin relays, covering the most common automotive relay types.
Accurate diagnostics
Built-in circuit detection helps you pinpoint electrical issues with confidence, reducing guesswork during troubleshooting.
Comfortable to use
The ergonomic, handheld design makes it easy to work in tight spaces, whether in the workshop or by the roadside.
Specs
The details that matter
Built to last outdoors, season after season.
- Compatibility
- 12V automotive relays (4-pin and 5-pin)
- Included
- Battery clamp
- Color
- Red
Comparison
Why choose this relay tester?
Not all products in this category are built the same.
Feature
SmartPicksWorld
Typical alternative
Relay compatibility
Works with both 4-pin and 5-pin relays
Often limited to one relay type
Power connection
Includes battery clamp for direct power connection
May require separate or additional wiring
Test feedback
Clear indicator lights show test results instantly
Results may be unclear or require interpretation
Our worry-free shopping promise
If your order arrives damaged, defective, or not as described, contact us within 14 days and we will make it right with a replacement or refund.
Frequently asked questions
Everything you might want to know before you order.
Which relays is this tester compatible with?
This tester is compatible with 12V automotive relays, specifically 4-pin and 5-pin types.
What is included with the relay tester?
The tester includes a battery clamp for direct power connection.
How do I know if a relay is working?
Clear indicator lights on the tester show test results instantly.
Can I use this tester for accurate diagnostics?
Yes, the built-in circuit detection provides accurate diagnostics for electrical troubleshooting.
Is the tester easy to use in tight spaces?
Yes, the ergonomic, handheld design makes it easy to use in tight spaces, whether in the workshop or by the roadside.
Shipping & returns
Shipping
- Delivers to United States (based on your selected country/region).
- Estimated delivery: 3–15 business days after dispatch.
- Shipping cost: Free.
Returns
You can request a return within 14 days after delivery. Standard returns have a €4.00 EUR (approximately $4.66 USD) flat-rate return shipping fee, deducted from your refund. Return shipping is free for items that arrived damaged, defective, or incorrect. Items should be unused and in original packaging where possible. Contact us before sending anything back.