Verizon LTE Upgrade For Interlogix Simon Panels w/3G or CDMA Communicator

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This XT-511-US-VZ-LTEUP is meant to replace an existing 3G or CDMA communicator from an Interlogix Simon Alarm Panel. The communicator being replaced should be active and currently able to communicate with the servers. Buy the XT-511-US-VZ-LTEUP from Alarm Grid!
  • Amazon Alexa
  • Google Home
  • Z-Wave
  • Z-Wave Plus
Our Price


This XT-511-US-VZ-LTEUP is meant to replace an existing 3G or CDMA communicator from an Interlogix Simon Alarm Panel. The communicator being replaced should be active and currently able to communicate with the servers. Once this module is installed and activated, the Simon panel will be able to take full advantage of the Verizon LTE network along with the remote control ecosystem.

For those customers who have an Interlogix Simon system that has never been monitored through before, we also offer the XT-510-US-VZ. This communicator is meant to be used with a Simon system that is being connected to the servers for the very first time. We also offer the AT&T XT-512-US-AT for those who are located in an area where AT&T LTE has a better signal.

The ability for an alarm system to communicate signals to the end-user or a monitoring station, or both, is essential to get the full benefit out of the system. As just a local noisemaker, an alarm system has to rely on its ability to make noise to scare away intruders, or to alert family members to a potential fire or carbon monoxide condition. With the ability to communicate also comes the ability to use other features, such as remote control and automation, both of which are available through Interlogix Simon panels can communicate through a copper phone line, but most homeowners have gotten rid of their home phone service in favor of the flexibility that cellular phones offer. Some homes or businesses may have Voice over IP (VoIP) service, but this has proven too unreliable to be counted on for alarm communication. Even if you still have a copper phone line, the service is vulnerable to tampering, since it comes into the home or business from outside. A knowledgeable burglar can easily cut a phone line, leaving the system with no way to communicate.

That's where cellular alarm communication can help. If you have an existing 3G/4G or CDMA cellular communicator, then you already understand how valuable cellular communication is. In the event that you either don't have a copper phone line or that the phone line is tampered with, a cellular communicator will still be able to transmit a signal on behalf of the Interlogix Simon panel. The XT-511-US-VZ-LTEUP uses the Verizon LTE network for this purpose. The LTE cellular network is highly stable, and has redundancies built in that prevent any type of long-term outage. LTE stands for Long Term Evolution, and cellular providers have said they plan to support this technology well into the distant future. This LTE communicator allows you to connect to Whether you decide to self-monitor your system, use a central station for monitoring, or to combine the two, will be the service your signals are sent through.

Self-monitoring is when the Simon Panel sends you and your designees a text, email, push notification, or all three whenever a system event occurs. System events may include alarms, troubles, arming, disarming, or any other type of alarm system event you may want to be notified about. Central station monitoring is where the system only 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 contacting the user, and/or dispatching authorities. For Alarm Grid customers, any Full Gold or higher monitoring plan combines both of these options for any customer using the XT-511-US-VZ-LTEUP communicator. A Gold plan or higher is required any time a cellular communicator is used.

On top of operating as an LTE communicator, the XT-511-US-VZ-LTEUP also has a built-in Z-Wave Plus controller. With this module and any compatible plan other than Cellular Alarm Monitoring, Alarm Grid customers will get access to the full suite of remote control and automation features. In addition to the user being able to remotely verify system status, arming, and disarming, the user can also create automation rules and scenes using any Z-Wave devices that are learned into the Z-Wave Plus controller. There are also many server-to-server automation options available such as LiftMaster Garage Doors, Amazon Alexa, Google Home, Sonos, Ecobee Smart Thermostats, and more, with new partnerships for third-party automation optins being added all the time.

For those customers who prefer a dual-path communicator, Alarm Grid also offers these products:


  • 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: Verizon 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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* Based on a 10% APR with 12 months financing. APR's will vary between 10% - 30% based on credit score and various factors.