4 pcs DC 5V 1 Channel Relay Module Board Shield High/low Level Trigger with Optocoupler for Arduino

I installed two of these on my tractor for controlling a larger high current solenoid switch. I had to add a DC-Buck voltage regulator upstream of it, due to burning out the first one, since somewhat wild 12-14.5V was just too much for it (it worked fine for about a day, then died.) The second one has been performing flawlessly for a couple months now. 😀

Ils font partie d'un système de domotique

need to add a jumper wire if you want to have both channels controlled by 1 input, but they work well and a bargain for the price - terminals are hard if you don't know to place wire to one side as the screw is in the middle.

Excellent product, using it on my HO railroad to control RR crossings, it took a little studying to figure out the wiring to actuate the relay, once I figured it out they work perfectly. Would buy again for sure.

These are actually quite simple to use after a little digging. The datasheet is terrible but the manufacturer has placed these relays on a breakout board that allows you to use a HIGH or LOW signal to activate the relay. I'm using mine for a class project involving a temperature controller that turns on a fan or heating element depending on the temp. They are rated for up to 250V AC and use an infrared optocoupler to separate the digital control circuit (low voltage) from the analog output (higher voltage). Very happy with my purchase as many Amazon electronic components are very inconsistent in quality and reliability coming when they come from foreign manufacturers. Would recommend.