Industry Solutions · Fire & Security
The RF Backbone of
Australia's Security Infrastructure
D&G Antennas — trading as Xtend Communications — manufactures and distributes 50Ω RF antennas and cable assemblies for Australia's fire and security monitoring industry. We are a manufacturer and distributor only — we do not perform field installations. Our DG900MB-HG High-Gain Multiband Omni (700–2700 MHz, +6 dBi, IP65) is the preferred RF component for Centaur and Centair 2 monitoring modules deployed by ADT, Johnson Controls, and Wormald across commercial and industrial sites in Australia and New Zealand. Every unit individually tested on an Anritsu Site Master. B2B bulk pricing from 50 units. OEM supply from 200+ units.
ADT
Security monitoring
Johnson Controls
Fire & security systems
Wormald
Fire protection
Cardtronics
ATM & kiosk connectivity
Application
Centaur & Centair 2 monitoring modules
Gain
+6 dBi — signal margin on long cable runs
Impedance
50Ω precision — no reflected power losses
Connector
N-Type Female standard
Ingress
IP65 — plant room and rooftop installations
Testing
Every unit tested on Anritsu Site Master
— Applications
Critical Uplinks.
No Second Chances.
Fire Alarm Monitoring
Monitoring modules in fire alarm panels require a reliable cellular uplink to the monitoring station. The DG900MB-HG provides the gain margin to maintain link budget through plant rooms, risers, and structural concrete.
Security System Comms
ADT, Johnson Controls, and Wormald-integrated security systems depend on consistent RF uplinks. Our antennas are specified into Centaur and Centair 2 modules deployed across commercial and industrial sites in AU and NZ.
OEM Panel Integration
For security panel manufacturers requiring a certified, in-spec RF component at volume. N-Type Female input allows direct integration into RF enclosures. Custom cable assemblies supplied to BOM specification.
— Recommended Products
Specified for
Fire & Security
700–960 / 1700–2700 MHz
DG900MB-HG
High-Gain Multiband Omni
The preferred RF component for Centaur and Centair 2 monitoring modules supplied to ADT, Johnson Controls, and Wormald across AU & NZ. +6 dBi overcomes cable losses in plant room and rooftop installations.
Full Specs & Datasheet850 / 915 MHz (LoRa ISM)
DG850LP-MB
Low-Profile IoT Omni
For LoRaWAN-enabled security monitoring nodes and smart panel installations. Ultra-low profile installs inside IEC60068-rated enclosures without compromising the IP rating of the host device.
Full Specs & DatasheetDC – 6 GHz
Custom Cable
Custom RF Cable Assembly
Custom patch leads for routing from panel modem port to external antenna. Any length, MMCX/TS9/SMA/N terminations available. OEM procurement at 200–500+ units.
Full Specs & Datasheet— Supply Chain
Already in the Panels
You Service
D&G Antennas — the manufacturer behind Xtend Communications — has supplied RF components to the Australian fire and security industry for over three decades. If you're servicing ADT, Johnson Controls, or Wormald-maintained systems, you've already replaced our parts.
Preferred OEM Supplier
Centaur & Centair 2 Compatible
AU & NZ Distribution
Volume Pricing Available
— Get a Quote
Procurement
Made Simple
Submit your requirements below. Our engineering team responds within 1 business day with pricing and lead times.
Why quote through Xtend?
D&G Antennas — OEM supplier to ADT, JCI, Cardtronics, and Elsema. Direct to your project.
Direct to the Manufacturer
D&G Antennas makes the product. Your quote goes to the source — not a distributor or call centre.
200–500 Units Is Our Normal
Strategic pricing at 50+ units. Volume orders are our standard business — we won't blink at your quantity.
Custom Assemblies to Spec
Non-catalogue cable runs, frequency-tuned antennas, custom connector types. Quoted against your system drawings.
1-Day Response
We supply ADT, JCI, and Cardtronics — we understand what a procurement deadline means. Response within 1 business day.
50+ Units
Strategic discount applies automatically at 50 units per line item. Account pricing available for ongoing procurement.