Not sure why you'd need serial port.
You're gonna run into similar problem in that Uplink only sells service to alarm dealers though.
| > >Does anyone know how the Honeywell AlarmNet 7435-GSM unit would | > >interface into the Caddx NX-8e panel? It's not too clear to me how that | > >hook-up would be accomplished (there doesn't seem to be a lot of | > >documentation on the Honeywell site on installation information that I | > >could find at least.) Also, would the connection provide full Contact | > >ID reporting?You won't get full CID reporting with Alarmnet and a GE panel. It can | > only be used in 'zone' mode with panels without a Honeywell ECP bus. |