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Topic: How to wire 4 AC outputs to a 4 relay board with optocoupled channels (Read 308 times) previous topic - next topic


Hi guys, i started using arduino something like 2 years ago, always working on small kind of projects. Now i want to build something bigger, its an automated indoor growbox.
To work on this project I have to deal with a higher voltage (220VAC), but im not very familiar with relay so I have my doubts to wire it up.

There are the specifications of the relay board:


I have to wire it up with a:

- Ventilation Fan
- 2 AC lights

I appreciate any kind of help


Your PCB

See thes two images:

Use the normally open contacts in series with the AC power to your loads.

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