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A black and red car relay tester device with test leads shown next to it.
A close-up view of a universal automotive relay tester with various connectors and indicators shown in a car context.
A hand holds a red LED light automotive relay tester device with test buttons in a car engine bay context.
A black universal automotive relay tester device with a red display and various connectors and buttons.
A black pin relay tester device is shown next to a blue car, demonstrating 4-pin or 5-pin relay functionality.
A red universal automotive relay tester device with a black casing and a testing probe.
A black automotive relay tester device with 4 and 5 pin connectors shown next to various features like USB power supply and L
A hand is crossing its arms in front of an engine, demonstrating the use of a USB device for power retrieval on an automotive
Detail instruction diagram showing components of a universal automotive relay tester device.
A set of universal automotive relay testers shown with various features like power supply safety, ease of operation, and LED
A black universal automotive relay tester device with test lights, pin connectors, and an attached cable.
A red and black universal automotive relay tester device with a cable connected to it.
A black and red car relay tester device with test leads and a separate red and black unit.
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Universal Automotive Relay Tester

Regular price €23,99 Sale price €20,99 – €43,99

Why customers love it

Diagnose your vehicle's electrical health instantly

Ensure your automotive systems operate safely and correctly with this portable relay tester, designed for reliable on-the-go diagnostics.

  • Provides clear, dual-color LED feedback for instant relay health indication.
  • Accurately checks the on/off timing and contact status of common automotive relays.
  • Compatible with both 4-pin and 5-pin electromagnetic relays.
  • Built with a robust design perfect for DIY mechanics and enthusiasts.
A black and red car relay tester device with test leads shown next to it.

Reliable Diagnostics at Your Fingertips

Instant Feedback

Dual color LED system gives you immediate, clear information on relay function.

Wide Compatibility

Works reliably with both 4-pin and 5-pin electromagnetic relays.

Built to Last

Robust construction ensures durability for use in demanding automotive environments.

Easy Operation

Simple interface allows mechanics and enthusiasts to troubleshoot quickly.

Key Specifications

Technical Details

What you need to know about the tester.

Compatibility
4-pin and 5-pin electromagnetic relays
Indicator System
Dual color LED system

Why Choose Us Over Cheap Testers

The Advantage of Quality Diagnostics

Invest in reliability for accurate results.

Feature
SmartPicksDrive
Typical alternative
Reliability
High reliability, accurate readings.
Often inaccurate or unreliable indicators.
Pin Support
Supports 4-pin and 5-pin relays.
May only support specific pin configurations.
Feedback Clarity
Clear dual-color LED feedback.
May offer vague or single-color indication.
Build Quality
Robust design for on-the-go use.
Often fragile or non-durable construction.

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

Answers to common user queries.

Can this tester be used on modern electronic modules?

This tool is specifically designed for traditional electromagnetic automotive relays. It is best used for testing the relay itself, not complex electronic modules.

How durable is the device for field use?

The tester features a robust design suitable for on-the-go automotive diagnostics, making it reliable for field use.

Does it work with all types of automotive relays?

It is compatible with common 4-pin and 5-pin electromagnetic relays, making it a versatile tool for many vehicle systems.

What is the difference between the LED colors?

The dual color LED system provides distinct signals to clearly indicate the relay's operational status, such as closed or open contacts.

Shipping & returns

Shipping

  • Delivers to Tyskland (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.

Shipping policyReturn & refund policy

Tools for Automotive Diagnostics

Explore reliable tools for your vehicle maintenance needs

  • 5 stars: 18 (82%)
  • 4 stars: 2 (9%)
  • 3 stars: 2 (9%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
G
German Lemke

As described, works well, I recommend it.

German Lemke review photo
M
Mario Gorczany

not yet tested.

Mario Gorczany review photo Mario Gorczany review photo
A
Antonio Gusikowski

I received it fine. didn't take long and the product works and it's great. i recommend it

M
Margit Hammes

Good device, working perfectly, I recommend it.

E
Eddy Turcotte

Good item

K
Kendrick Willms

Excellent service, arrived on time and in good condition, works perfectly.

C
Charis Treutel

Beautiful work as always. thank you friends, see you on the next order.

N
Neva Hilpert

Nice as always, very reliable seller with good and excellent product.

A
Angie Stehr

All good, ordered a few of these and all work perfectly fine. i’m really pleased.

K
Kenton Smitham

Great tool for the money

T
Terrie Pagac

Compact and easy to use.

S
Sandy Gislason

Does what’s needed

K
Kathlyn Murray

Ok

I
Ivette O'Hara

Received as described

S
Stephani Gutmann

Great value and it works as it should. Received it pretty quickly.

A
Annetta Fritsch

In accordance with its price and description

L
Lauren Mraz

does not make all the relays pins not wide enough

I
Ina Christiansen

Ok

P
Paris Prohaska

Very good

M
Monty Hilll

It was received well.

T
Thurman Raynor

easy to use

S
Santana Cruickshank

Thank you