Z-Wave compatible Alarm Monitoring Communicators

Impassa with AT&T 3G Alarm.com Cellular Communicator, No Transformer

Verizon LTE Cellular Communicator for Simon XT, XTi & XTi-5

Telus LTE (Canada) Cellular Communicator for Simon XT, XTi and XTi-5

AT&T LTE Cellular Communicator for Simon XT, XTi & XTi-5