Overview
Interlogix Simon self-contained wireless panels (Simon XT, XTi) combine a compact control board with built-in 319.5 MHz receiver for TX-E sensors and optional Alarm.com LTE communicators.
The panel is the brain of the intrusion system: it supervises wired and wireless zones, drives bell/siren outputs, manages automation on supported models, and reports to Alarm.com / UltraSync when a compatible communicator is installed. Installers program zones, user codes, and dialer options with dealer programming tools (varies by Challenger, Reliance, Simon); end users arm/disarm from RAS keypads, keyfobs, or the monitoring app.
At a Glance
| Specification | Details |
|---|---|
| Role | All-in-one wireless residential panel |
| Wireless | 319.5 MHz TX-E sensor family |
| Keypad | Integrated touch-button or touchscreen UI |
| Cellular | Add-on LTE module for Alarm.com / monitoring |
| Limits | Compact residential zone count — verify Simon capacity before expansion |
What This Panel Does Well
Coordinates intrusion zones, automation, user codes, and central station reporting when cell and monitoring are configured.
Before You Service or Replace One
- Exact panel model — Simon vs Challenger vs Reliance vs Tecom — firmware and modules differ.
- Encryption — TX-E vs hardwired vs Challenger wireless sensors in the field.
- Cell module SKU — Simon Alarm.com LTE vs Challenger/Tecom 4G (AU/NZ SKUs).
- Installer code — required for zone changes; document before service.
- Alarm.com / UltraSync dealer — account status, plan, and remote programming access.
Official Sources
- Aritech product page
- Alarm.com Dual-Path LTE Communicators for Interlogix Simon Panels - Install Guide
- Interlogix Simon XT - User Manual
- Interlogix Simon XT - User and Installation Errata
Use official Aritech install PDFs and install guides for exact wiring, enrollment, and firmware — specifications vary by SKU and region.