Auteuils makes pool control interfaces for the major brands of swimming pool equipment. It would be awesome to have basic pool control built into Roomie. They publish a sample of the protocol - http://www.autelis.com/wiki/index.php?title=Pool_Control_HTTP_Command_Reference
Update: support for device really not necessary as I was able to just create custom buttons to send url/http silent commands to the device.
the format for commands is username:password@xxx.xxx.xxx/se … abc&value=n
where abc is the component name (e.g. spa pool pump) and n is 1 for on and 0 for off