Honeywell/ADEMCO Vista & Alarm.com
Honeywell and ADEMCO Vista systems can use Alarm.com through a compatible System Enhancement Module. If you already have an eligible Vista system installed, you may be able to use the existing panel when activating Alarm.com service through True-Link.
How to Find Your Honeywell/ADEMCO Vista IMEI
The SEM serial number is found on the sticker of the cellular module.
The serial number is printed on the cellular module following SN/IMEI.
Default Codes
Installer code: 4112
Master Code: 1234
Activating Your Honeywell/ADEMCO Vista with Alarm.com
1. Locate your panel's IMEI using the instructions on this page.
2. Choose your True-Link plan here and provide the IMEI during checkout.
3. Keep your panel powered on until activation is complete.
Not sure whether your panel is available? Use our Panel Status Checker before purchasing your plan. If you are switching providers, confirm your communicator supports LTE before cancelling your existing service.
Important Information
Have a compatible Alarm.com LTE SEM installed. The panel or PROM chip must have been manufactured in 2005 or later:
| Panel | Minimum PROM revision |
| --- | --- |
| Vista-10P | 2.0+ |
| Vista-15P / Vista-20P | 3.1+ |
| Vista-21iP | 3.1+ |
Complete the required SEM installation and local panel programming before activation is finalized.
For a new SEM account, provide the current panel installer code with your activation details. After account setup and installation, let the SEM complete its initial zone scan without using the keypad.