— Installer Guide
Honeywell Galaxy Flex
External 4G Antenna
The Honeywell Galaxy Flex 20, Flex 50, and Flex 100 use the CF4 4G cellular communicator module, which features a standard SMA Female antenna port. Where the supplied stub antenna can't deliver reliable signal from metal enclosures, commercial floors, or fringe sites, this guide covers the correct external antenna and cabling.
SMA
Connector Type
CF4
Module Ref
7 dBi
Gain Available
IP65
Outdoor Rated
About the Galaxy Flex Communicator
The Honeywell Galaxy Flex range is widely used in Australian commercial, retail, and industrial security applications. The CF4 cellular communicator module adds 4G connectivity to Galaxy Flex panels, providing a direct primary or backup path to the monitoring station without relying on PSTN infrastructure.
The CF4 exposes an SMA Female antenna port on the module face. The supplied rubber stub antenna performs adequately in open environments but is inadequate in steel enclosures, shielded plant rooms, or locations with marginal LTE coverage.
CF4 Antenna Port Specs
Common installation scenarios
Galaxy Flex in steel enclosure
The Galaxy Flex enclosure is powder-coated steel. The CF4 stub antenna is located inside. The external omni's SMA Male lead enters through a knockout and connects directly to the CF4 port.
Commercial office and retail premises
The Galaxy Flex is common in multi-tenancy commercial buildings. Signal quality on mid-floor plant levels is often poor due to building structure attenuation. An external antenna mounted in the ceiling space or on the building exterior resolves this reliably.
Post-PSTN monitoring upgrade
Large numbers of Galaxy Flex systems were commissioned with PSTN monitoring. The CF4 is the 4G replacement communicator. Where signal is marginal after installation, an external antenna resolves the issue at commissioning rather than after a signal-loss alarm.
Industrial and logistics sites
Warehousing, distribution centres, and manufacturing sites often have heavy steel-frame construction that attenuates mobile signals. An external antenna mounted on the building exterior or roofline ensures continuous 4G monitoring path.
Recommended D&G Products for Galaxy Flex
All antennas and cable assemblies tested before dispatch. Custom cable assemblies quoted to site drawings.
DG900MB-HG — High Gain Multiband Omni
Primary antenna for Galaxy Flex installations with a CF4 communicator. The CF4's SMA Female port connects directly to this omni's own SMA Male lead. 7 dBi at 700–1000 MHz recovers signal from steel enclosures, plant rooms, and signal-shielded commercial premises.
DGY900-6 — Yagi Directional Antenna
For Galaxy Flex installations at commercial or industrial sites with marginal 4G coverage. Point toward the nearest Telstra or Optus LTE tower. 12 dBi on the 700–960 MHz low bands provides substantial link margin over the CF4 stub antenna.
Custom Cable Assembly
Low-loss ALSR195 (lower loss than RG58) or LMR400 for routing from the Galaxy Flex enclosure through conduit to an external antenna mount. Built to your site specification. SMA or N termination at each end.
Why Galaxy installers specify D&G
100% tested, not sampled
Every antenna and cable assembly is tested before dispatch. A failed CF4 antenna on a commercial Galaxy site is a callback and a failed inspection — we remove that risk at source.
OEM supplier to the monitoring industry
Our antennas are inside ADT, Johnson Controls, and Wormald monitoring infrastructure across Australia. The same build quality and test standard applies to every product we supply.
Custom cable assemblies
We build SMA connector cable assemblies in any length. ALSR195 (lower loss than RG58) for standard runs, LMR400 for long paths through conduit where insertion loss is critical.
Stocked in Penrith, same-day available
No import delays. Call ahead for same-day collection from our Penrith warehouse. 2-week lead time for custom cable assemblies.
Also relevant: Alarm Panel 4G Antenna Guide · Bosch Solution 6000 Antenna
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