What will be the best way of link a relay on-off to isy944. 
ie : a sensor closes ( or opens) a relay when detects something. 
Thanks 

More details needed.  What kind of sensor?  What are we actually controlling with the relay?

IOLinc sensor input can detect relay closures. Assuming you have Insteon network.

I recently started playing with Shelly relays. They also have a sense input that can be used to generate a REST call to change a variable in the ISY. For this you might need the network module. Also you will not be able to query the status of the device on ISY power up and will have to wait for the state of the device to change to know its state. This may be an issue if it is monitoring something critical. Hopefully someone will create a node server soon to get around this limitation.

Well, at this point I rather use anything non-insteon.

The options I'll use are either a raspberry pi GPIOs or a relay connected to them, regardless of what's triggering the raspi.

Any ideas? Not sure if I can ran the same raspberry with the GPIO Node though.

On 7/23/2021 at 9:17 PM, gzahar said:

IOLinc sensor input can detect relay closures. Assuming you have Insteon network.

I recently started playing with Shelly relays. They also have a sense input that can be used to generate a REST call to change a variable in the ISY. For this you might need the network module. Also you will not be able to query the status of the device on ISY power up and will have to wait for the state of the device to change to know its state. This may be an issue if it is monitoring something critical. Hopefully someone will create a node server soon to get around this limitation.

What Shelly relay model are you testing ? 

What Shelly relay model are you testing ? 

SHELLY 1