AT&T LTE Communicator for Interlogix Simon Panels

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The XT-512-US-AT-LTE is an AT&T LTE Communicator for use with Interlogix Simon Alarm Panels. This module can be used to add service to any Simon Panel, regardless of current monitored status. Buy the XT-512-US-AT-LTE here!
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The XT-512-US-AT-LTE is an AT&T LTE Communicator for use with Interlogix Simon Alarm Panels. This module can be used to add service to any Simon Panel, regardless of current monitored status. It installs neatly inside the Simon Panel and doubles as an LTE communicator and a Z-Wave Plus Automation Controller.

For customers with an Interlogix Simon Alarm Panel that has been registered with before, we also offer the XT-511-US-AT-LTEUP. This AT&T LTE Module is meant to be used with an Interlogix Simon panel that already has an AT&T 3G or Verizon CDMA cellular communicator installed and registered, but requires an upgrade to LTE. For those users who may be in an area where Verizon LTE has a better signal strength than AT&T LTE, you can purchase the XT-510-US-VZ Verizon LTE Communicator for Interlogix Simon panels. And for users who may want to use AT&T LTE, but would also like to utilize an available internet connection, we offer the XT-510-US-DP-AT AT&T LTE and Ethernet Dual-Path Communicator or the XT-510-US-DP-VZ Verizon LTE and Ethernet Dual-Path Communicator.

An alarm system with no communication path is basically just a local noisemaker. It is intended to hopefully, scare away an intruder. Adding the ability for a system to communicate beyond the home or business where it is installed, opens up a wide variety of available features. The Interlogix Simon panels have the required hardware to communicate via an old fashioned copper phone line for traditional central station monitoring, but for those who have removed the old fashioned phone line, this communication path is no longer available. Even with VoIP phone service on site, this type of phone connection has proven too unreliable to be counted on for alarm communication. And even with a copper phone line, a quick snip of the line from outside the building, and your alarm system is right back to being just a local noisemaker.

The XT-512-US-AT-LTE, allows the Interlogix Simon Panel to communicate using AT&T LTE. LTE Cellular service is very reliable, with lots of built-in redundancies where power and signaling are concerned. AT&T LTE is fast and stable, and service outages are rare. LTE stands for Long Term Evolution, and the LTE network will be around for many years to come. The LTE communicator allows you to connect to Whether you decide to use self-monitoring for your system, to go with central station monitoring, or you choose to combine the two, will be the service your signals travel through. The XT-512-US-AT-LTE is also compatible for Canadian users with a Simon panel that needs an LTE communicator.

Self-monitoring is where the Simon Panel sends you and whomever else you choose a notification. A text, email, push-notification, or all three if you choose, can be sent any time a system event occurs. Alarm, trouble, arming, disarming, and any other type of system event can be sent as a notification. Central station monitoring is what most people think of when they think of alarm monitoring. This is where the system sends signals to a continuously monitored central station. There, a highly trained operator receives the signal and then processes it according to preset instructions. This may include notifying you, contacting the authorities, or a guard service. For Alarm Grid customers, any Full Gold or higher monitoring plan combines both self-monitoring and central station monitoring into what we call full monitoring. A Gold plan or higher is required when using a cellular communicator such as the XT-512-US-AT-LTE.

In addition to operating as an LTE communicator, the XT-512-US-AT-LTE also has a built-in Z-Wave Plus controller. With this module and any compatible plan other than Cellular Alarm Monitoring, Alarm Grid customers receive access to the impressive suite of remote control and automation features. In addition to the ability to remotely verify system status, arm, and disarm, the user can also create automation rules and scenes using any Z-Wave devices that are learned into the Z-Wave controller. In addition, there are also many third-party server-to-server automation options available such as LiftMaster Garage Doors, Amazon Alexa, Google Home, Sonos, Ecobee Smart Thermostats, and more, with new capabilities being added all the time.


  • Panel Compatibility: Simon XT version 1.3+ and Simon XTi
  • Power Requirements: 6V Nominal
  • Standby Current: 30mA (10mA in PowerSave Mode)
  • Peak Current: 1.7A
  • Operating Temperature: 32℉ - 120℉ (0℃ - +49℃)
  • Storage Temperature: -30℉ - 140℉ (-34℃ - +60℃)
  • Max. Relative Humidity: 90% Non-Condensing
  • Cellular Network: AT&T LTE
  • Dimensions: 4.06" H x 1.87" W (10.3cm x 4.7cm)
  • FCC Listings: FCC ID: YL6-143450L, IC: 9111A-143450L

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