Copyright © 2019 Nortek Security & Control LLC
9
Internal Components
This illustration details the GC3 Panel’s internal components.
GC3 Panel - Internal Components
Callout Component Description
A Backup Battery A backup battery used with the GC3 Panel to extend service during a power
outage.
B Cellular Radio Module An on-board digital communicator transmits alarms and trouble alerts to the
Central Station, and also supports 2-Way Voice communication.
C Terminal Block Two terminal blocks with screw-terminal positions for connecting the GC3
Panel to electrical power (PWR+/PWR1), hardwire loops/wired zones (ZONE1/
ZONE2), solid state output (BELL+/BELL-), and an open collector output (OCL1/
OCL2).
NOTE: Terminals are still marked as 2 Wire Smoke but 2 Wire smoke is not
supported
D Third Hand Hanging
Strap
A durable hanging strap provides installers with an extra hand when installing
and servicing the GC3 Panel.
E Receiver Board The main receiver board.
F Piezo Sounder An internal 85-dB Piezo Sounder.
G GC3 Panel Siren/
Speaker
An internal speaker that sounds loud, clear alarms, navigation tones, alert
tones, and supports 2-Way Voice communication.
H WLAN Card A Wireless LAN card to support the GC3 system’s self-contained Wi-Fi network.
I USB Port A built-in USB port for updating the panel’s fi rmware.