2GIG LTE Attic Antenna for GC2 Compatible Systems & Integrations

The 2GIG GC2 (and GC2e encrypted variant) is a compact touchscreen wireless panel supervising 345 MHz sensors, Z-Wave devices, and optional LTE communicators for Alarm.com or dealer monitoring platforms. The panel is ...

Overview

The 2GIG GC2 (and GC2e encrypted variant) is a compact touchscreen wireless panel supervising 345 MHz sensors, Z-Wave devices, and optional LTE communicators for Alarm.com or dealer monitoring platforms.

The panel is the brain of the 2GIG system: it supervises wireless zones, drives local sirens, manages Z-Wave automation, and reports to Alarm.com (or your dealer monitoring platform) when a compatible cell module is installed and activated. Installers program zones, user codes, and dialer options in the installer menu; end users arm/disarm from the touchscreen, keyfobs, or Alarm.com app.

At a Glance

SpecificationDetails
RoleCompact touchscreen alarm panel
Wireless sensors345 MHz 2GIG sensors; GC2e supports eSeries encrypted
AutomationZ-Wave devices
CellularGC2 LTE CAT1 modules — verify ADC vs Alarm.com vs SecureNet SKU
ProgrammingInstaller code on panel
Form factorSmaller footprint vs GC3 — plan sensor count and range

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 — GC2 vs GC3 vs Edge — firmware and modules differ.
  • Encryption — GC2e/GC3e/Edge vs standard sensors in the field.
  • Cell module SKU — Alarm.com vs ADC vs SecureNet vs Telus.
  • Installer code — required for zone changes; document before service.
  • Alarm.com dealer — account status, plan, and remote programming access.

Official Sources

Use official 2GIG PDFs and install guides for exact wiring, enrollment, and firmware — specifications vary by SKU and region.

Compatible Peripherals

This page lists 2GIG ecosystem compatibility — panels, transceivers, repeaters, and monitoring platforms — not third-party panel brands unless using an approved takeover path.

Host compatibility

Host / ecosystemHow it connects
345 MHz sensors & keyfobsStandard GC2 wireless enrollment
GC2e encrypted sensorsGC2e panel with matching firmware
GC2 LTE cell radioDealer-specific interactive services
345/900 MHz transceiver (XCVR5e)Extended range on GC2e where installed

Not compatible / common mistakes

  • GC3-only accessories without compatibility check
  • 319 MHz DREC2 transceiver assumptions on all GC2 SKUs — verify region/hardware

Replacement guidance

  • Match SKU and encryption generation on product label before ordering.
  • Delete old zone/device in installer programming before enrolling replacement.
  • Document zone number and name for user and central station records.
  • Run walk test and communication test after swap on monitored accounts.

Source: 2GIG GC2/GC2e user guide and install/programming documentation (2GIG official documentation).