Read AC 220V status with GPIO Raspberry PI2

Add-ons Bindings
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OH is on the raspberry pi. Is there any reason why I should host it elsewhere?
I plan to use relays for Arduino, they have optocouplers and they draw very low mA - I guess that’s the primary concern, right?

https://www.aliexpress.com/item/Free-shipping-With-optocoupler-8-channel-8-channel-relay-control-panel-PLC-relay-5V-module-for/1885297342.html?spm=2114.13010608.0.0.5cxyZg