HiLetgo 12V 4 Channel Relay Module with OPTO-Isolated Support High and Low Level Trigger

I have it installed and wired works like a charm

Works great, however the will not work below 8.6 volts

La confezione contiene tutti gli accessori per i collegamenti e le istruzioni, funziona correttamente ed è molto utile per gestire vari utilizzatori, lo consiglio sia per imbarcazioni che camper.

On most of my projects, I buy these off-the-shelf relay boards rather than design, build, and test something of my own design. The cost of these boards is far less than a board I design and build myself, and it's built on an assembly line with the latest wave-soldering and testing plus the board is usually overengineered to include optical isolation and numerous capacitors and resistors to keep the signals clean and any relay coil feedback to a minimum. This specific board has four independent 12 VDC SPDT relays with a 240 VAC 10 Amp or 30 VDC 10 Amp switching capacity. The input signals are opto-isolated and can be configured for low or high trigger. The board worked perfectly out of the box, which is my experience about 99% of the time.

If you're even mildly electrically inclined, this is pretty simple to set up. The operation of it is pretty simple. I had originally used this in an open auto pro setup, but decided to switch over to a four-channel opto coupler board instead, another there was anything wrong with us at all. It works really well and does what it's supposed to do. This board would also be a better option if you are trying to control higher voltages, as the optocoupler boards circuit is not designed to have a significant amount of current running through it. Something to keep in mind!