JFIND JF107 Car Relay Tester, 12V–24V

JFIND JF107 Car Relay Tester, 12V–24V, for 4 and 5 Pin Relays

JF107 Relay Tester

$9.59 $20.40

JFIND JF107 Car Relay Tester, 12V–24V, for 4 and 5 Pin Relays

$9.59 $20.40

The JFIND JF107 quickly checks whether a car relay is working. Clip it to the car battery, plug in a 4- or 5-pin relay and press Test. A green light means the relay is normal; red means it isn't.

Why you'll love it

Clear pass/fail lights – green for normal, red for faulty, no guessing.
Fits common relays – works with general-purpose 4-pin and 5-pin automotive relays.
Powered by the car battery – clips onto an 11–25V battery, so there's nothing to charge.
Automatic testing – detects the pin layout, cycles the relay 10 times and checks consistency.

JF107 car relay tester clipped to a car battery in a garage with a relay plugged in

Find a bad relay in seconds

Instead of swapping parts and hoping, plug the relay in and get a clear answer from the lights before you buy a replacement.

The details

Model: JFIND JF107 relay detector
Relay types: 4-pin and 5-pin
Battery voltage: 11–25V
Coil resistance: 20Ω or higher
Power: car battery via alligator clips
Indicator: green LED (normal), red LED (not normal)
In the box: 1 × JF107 relay tester

Questions

Which relays does it test?

General-purpose 4-pin and 5-pin automotive relays with a coil resistance of 20Ω or higher.

What voltage does it work with?

It connects to a car battery between 11V and 25V.

Does it need its own batteries?

No, it's powered by the car battery through the alligator clips.

How do I use it?

Clip the black alligator clip to the battery's negative terminal and the red clip to the positive terminal.
When the red LED lights, the tester is ready.
Check your relay: use the 4-pin socket for a 4-pin relay or the 5-pin socket for a 5-pin relay.
Plug the relay into the socket and press the Test button.
The tester finds the pin layout, switches the relay 10 times to check release time, then checks consistency.
Green light means the relay is normal; red means it isn't.
When you're done, unclip the tester from the battery and remove the relay.

What's in the box?

One JFIND JF107 relay tester.

What if my order arrives damaged or wrong?