Read the state of 10 Relays input


I would like to read the state of 10 circuits of 220 volts each, and then send the data to Node red.

Any susgetions

thank you


Unfortunately we don’t have a purpose built 220 VAC (i assume your 220 is AC). You can do this by using an AC coil relay connected to the circuits so that when voltage is present the relay will change position.

This can then be read by a contact closure input into a board like: or