Interlogix 600-1048-XT-ZX-VZ

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

Average rating:

(based upon one review)

The Interlogix 600-1048-XT-ZX-VZ cellular communicator connects with the Verizon CDMA network. Verizon's CDMA network is essentially a 3G...

This product is not sold by Alarm Grid at this time. As an alternative, we recommend:


The Interlogix 600-1048-XT-ZX-VZ cellular communicator connects with the Verizon CDMA network. Verizon's CDMA network is essentially a 3G version of the AT&T network. This network will soon be discontinued in favor of the faster Verizon LTE network. has already announced that they will stop allowing new CDMA activations in June 2018. CDMA radios that are activated before June will remain signaling until the Verizon CDMA Network is shutdown. Then, the official CDMA sunset will render this communicator useless. For faster speeds and a longer product life, we recommend choosing one of these LTE communicators from Verizon, AT&T or Telus (Canada Only) networks.

The Interlogix 600-1048-XT-ZX-VZ is a Verizon (CDMA network) Cellular Communicator for Interlogix Simon XT V1.3 or higher, XTi and XTi-5 alarm systems. These are all-in-one (AIO) alarm systems where the control panel is integrated into the keypad. This Verizon radio sits inside the keypad on the board, and it allows the panel to communicate with This is a third-party service that requires a monthly subscription with a dealer. You can choose to enroll in central station monitoring or self-monitoring using the app. The app offers remote interactive access and customizable alerts via email and text notifications on your mobile device. Generally, the dealer will bundle the cellular data charges into your monthly rate for monitoring service. Make sure to clarify this before activation.

Cellular communicators are always a preferred method when it comes to reliable alarm monitoring. Phone lines and internet modules rely on physical wiring that can be cut or lose contact over time. Phone lines will never support the newer interactive technologies offered by services like because of their limited infrastructure. Internet modules can be convenient, but they rely too heavily on a functioning local equipment like a router and a simple IP conflict can kill your monitoring connection. IP setups are great in terms of speed but not the best when it comes to reliability.

The installation guide for the module walks you through how to power down the panel and physically install the cell card. There are two plastic tabs that hold the card into place. After installing the module, you will want to setup an activation appointment with an dealer. During the activation you will need to perform a "GSM phone test." This will generate an activation signal to the server and register the radio automatically.

Simon XT: Select “System Tests” in the main menu and Press “OK." Then enter the installer code (default 4321) and select "Comm Test".

Simon XTi and XTi-5: Go into tools (gear icon). Press "Programming" and enter your installer code (default 4321). Select "System Tests" followed by "Comm Test".

**Please note: any cellular communicator automatically is programmed to Zone 40 on your panel. If you already have a sensor configured to that zone, remember to reprogram it.** Also, Simon XT panels must be firmware version 1.3 or higher to support this radio.

Brand: Alarm.comInterlogixGE Security

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Do Not Buy! Get an LTE Communicator!
Submitted on 08/12/2019 Alarm Grid

We do not recommend the Interlogix 600-1048-XT-ZX-VZ. This is a CDMA communicator that can no longer be activated for alarm monitoring service. You will want to get an LTE communicator instead. Fortunately, we have LTE options available for the Interlogix Simon Series Alarm Panels. You should get one of those communicators instead.

LTE stands for Long Term Evolution. The LTE networks offer faster and more reliable service than their older networks. That is why cellular companies like Verizon invested tremendous amounts of money to develop the infrastructure necessary to make LTE communication possible. By going with LTE, you are ensuring that your security system works as reliably as possible. Additionally, these networks are not going away any time soon. By choosing an LTE communicator, you can keep your panel monitored well into the very distant future.

Cellular companies are already in the process of shutting down their older, non-LTE networks. This includes the Verizon CDMA Network used with the Interlogix 600-1048-XT-ZX-VZ. Once the associated network is shut down, then the communicator will no longer work. You should go ahead and get an LTE communicator, as non-LTE networks will eventually be shutdown anyway. It also doesn't hurt that an LTE communicator will provide faster and more reliable connectivity for alarm monitoring.

One thing that our technicians do like about the Interlogix 600-1048-XT-ZX-VZ is that it includes a built-in Z-Wave controller. This allows users to control smart home devices from However, the newer LTE communicators can also do this. If you have strong service from Verizon, then the Interlogix 600-1048-XT-LTE-VZ is a great option. You might also consider upgrading to a dual-path communicator that uses both LTE and IP. If that is the case, then the XT-511-US-VZ is a great option.

Bottom line, do not purchase the Interlogix 600-1048-XT-ZX-VZ. Get an LTE communicator like the Interlogix 600-1048-XT-LTE-VZ or a dual-path LTE communicator like the XT-511-US-VZ instead. This will provide faster and more reliable connectivity with for monitoring service. And if you already have an Interlogix 600-1048-XT-ZX-VZ, then you should upgrade to an LTE communicator as soon as possible. Your Interlogix 600-1048-XT-ZX-VZ will no longer work once Verizon shuts down their CDMA Network in the coming years.

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