Getting Started with suretyDIY and Interlogix Simon XTi

Getting Started with suretyDIY- Interlogix Simon XTi

If you have determined that a DIY Alarm Monitoring Service is the right fit for you,
and you are looking to switch to suretyDIY from another provider, the following steps will help you to get up and running with your service powered by

First, it’s a good idea to get an idea of the service plan you will want to use. Some considerations include:

Do you want central station 24/7 monitoring?
Do you have Zwave Automation equipment like door locks, lights, thermostats etc.?
Do you have cameras and require Cloud Video?
Do you have Image sensors or plan to add them?

Note when any service contract ends with your current provider. If you have a Simon XTi system currently but no provider, you will want to find your communications module number. For assistance finding this number, see this video.
Once you have this you can check your module number to see if it is unlocked.
Keep in mind that as of 2015, new accounts cannot be set up with a 2G communications module. This is due to cell carriers phasing out the service. In order to determine which cellular module you have (2G or 3G) This PDF can help.

If your module is unlocked, it is ready for use with another account. If not, there are a couple options:

-You can contact your current (or recent) provider and request that your module be released for use with another provider.

-You can purchase a new module. There are a variety of vendors online that can provide one for you. Any modules used with suretyDIY service will never be locked out.
You can use this coverage check tool to determine which carrier is the best fit for you.

You can get help swapping the communications module (if necessary) from this video.

Now that you’re able to switch service, you’ll need to order the service package that best fits your needs. Since suretyDIY is a month-to-month service, you can update or remove the features at any time. Below are the service levels we offer. 24/7 central station monitoring is available with either plan.

Gold Interactive
Basic Interactive

Once your order for service has been processed, and your equipment has a usable cellular module,
follow the instructions found in the suretyDIY welcome email, which you received after your service order was completed, to log in and start using your service.


Be sure to check out our various video tutorials for the Interlogix Simon XTi, including:

How to Reset Installer Settings on a Simon XTi
How to Change Installer Code on a Simon XTi
How to Run a Cellular Communication Test on Simon XTi

Remember, if you ever have any technical support questions direct them to the forum. All other questions can be emailed to


The Interlogix Simon XTi Panels utilize the GE wireless protocol, meaning, the panel works with most 319.5Mhz sensors.

I’m trying to activate my account with my Simon XTi and getting a message that 3G is no longer supported. What radio should I be upgrading to?

Happy to assist!

As of 6/30/2019, is no longer allowing accounts to be created utilizing 3G modules due to the impending 3G sunset. In order to create a new account a 4G module would be necessary.

For the Simon XTi you could use the 600-1048-XT-LTE-VZ which is the 4G LTE Verizon cellular module.