ControlByWeb relay devices are deployed as stand-alone devices on your network. Each device is assigned an IP address, port and optional control user credentials.
All devices must be reachable from the server that Events2HVAC resides on. If you enable a password for control, it will be easier to manage if you have a single set of credentials for all of your devices. You can optionally set each device with its own credentials for control.
The relay command options in Events2HVAC are currently only OFF or ON. Pulse control is currently not implemented.