What is a SIM card and why would I need one?

A Fortress SIM card turns your alarm system into a cellular phone, and gives it the ability to make calls to any phone on any provider.

With an active SIM card in your alarm system, you can:

- Call and/or text multiple numbers when an alarm is triggered.
- Control your alarm system using the free mobile app.
- Call over the phone and control your system from anywhere.

(Without an active SIM card, your system will still function as a local alarm.)  


We have two styles of SIM cards!

New-Style vs. Old-Style SIM Cards


What if I already have a Fortress system without a SIM card?

You can purchase a New-Style SIM Card from us directly!



What does the Fortress SIM Service include?

How much is the service?

How do I get started / activate?

What if I change my mind or want to cancel service?

What is the service coverage area?


Our SIM Card Terms and Conditions can be found here. Our Support team is also available to answer any other questions you may have!