Check the listing for details. INTERLOGIX 600-1048-XT-ZX-VZ. Condition: New. Listed at 125.00 USD. The Interlogix 600-1048-XT-ZX-VZ GSM module brings Alarm.com's secure wireless signaling, real-time event notification and Web-based remote monitoring and control capabilities to the Simon XT/XTi panels.The digital wireless communication enables secure alarm reporting to any central station via SIA or Contact ID, regardless of whether or not a phone line is installed at the system location. The module also enables Simon XT/XTi end users to monitor and control their security system remotely via the Alarm.com Web site and mobile/PDA devices. These devices support two-way voice over cellular, allowing users to speak directly to a central station in the event of an emergency. Additionally, using the Z-Wave enabled modems provides the added functionality of controlling Z-Wave class devices such as lighting and thermostats.Product FeaturesFits within existing Simon XT/XTi housing for quick and easy installationRemote monitoring and control provides homeowners with convenient access to their system anytime, anywhereRemote programming via AirFx toolkit allows dealers to troubleshoot and resolve issues without expensive "truck rolls"Nationwide cellular coverage covers 95% of North America's populationZ-Wave class modems enable homeowners to control lighting, thermostats, door locks and moreTwo-way voice over GSM allows homeowners to speak directly to a central station during emergencies*Verizon cellular network*