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using sonoff as backup for PLC


I have a PLC to control my home. My electrical cabinet is full of relays (24V to 220V) to control the house, operated by the PLC. I wonder if there is a way to operate the lights in house by using the Sonoff 4 channels Din rails next to the plc (ie in parallel)

Is there a way the sonoff relays board can trigger my 24v-to-220v relays?

If not, how to put in parallel the sonof to alternatively operate the lights in house?

any ideas?


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