Ajax VHF Bridge White - IOTREND
Ajax VHF Bridge White - IOTREND
Ajax VHF Bridge White - IOTREND
Ajax VHF Bridge White - IOTREND
Ajax VHF Bridge White - IOTREND
Ajax VHF Bridge White - IOTREND

Ajax VHF Bridge White

R 2,515.00 Incl. VAT

Available to order online or collect at 6 Cosmic Street Linbro Park, Sandton, 2090 (Map)


Ajax VHF Bridge Manual 

Ajax VHF Bridge White is a transponder that provides a hub with an additional channel to communicate with a monitoring station. With Ajax VHF Bridge White you can use Ajax systems in cities where Internet connection is unstable, in nature reserves, mountain and desert areas.


  • Place for a backup battery
  • Perforated areas in the casing3 for accurate cable management
  • 8 adjustable positive/negative trip outputs for sending events to a VHF transmitter
  • VHF transmitter power supply 12 V DC, 2 A
  • Casing protected from sabotage tampers detecting opening and removal from the surface3
  • Elaborate autonomy
  • Up to 75 hours4 of autonomous operation
  • Place for a 7 Ah backup battery
  • Adjustable signalling
  • Uncompromised security of communication
  • Hassle-free installation

Tech specs:


White and black


Transponder for communication with the monitoring station via a VHF transmitter



Number of potential outputs


Output types

Positive trip and negative trip (depends on the settings)

Transmission types

Pulse and bistable (depends on the settings)

Compatible with Ajax central units

Operates with Hub 2, Hub Plus, Hub 2 Plus

Compatible with Ajax range extenders


Compatibility with third-party VHF radio transmitters

vhfBridge connects to any VHF transmitter with relay inputs


Recommended models

Support for photo verification of alarms


Primary power supply

100–240 V, 50/60 Hz

Backup power supply

12 V DC, up to 75 hours of power for a transponder and a transmitter

Supported battery type

12 V battery with a full charge cycle of up to 30 hours.


The maximum battery size installed in the casing should be 150 × 64 × 94 mm

Recommended battery type

12 V battery with a capacity of 4 Ah or 7 Ah


Backup battery is not included in the set

VHF transmitter power

12 V DC, 2 A


Protecting against forgery

Jamming notifications

Tampers against opening and removal

Backup battery

Jeweller radio protocol

Communication range — up to 1,800 meters in a line of sight

Two-sided communication between devices

Operating frequencies: 868.0–868.6 MHz or 868.7 – 869.2 MHz (depending on the region of sale)

Auto-regulated radio signal power: ≤ 25 mW

Blocking encryption based on the AES algorithm

Detector ping interval: 12–300 seconds

Frequency hopping


Learn more about Jeweller

Maximum radio signal power

≤ 25 mW

Protection class


Operating temperature range

From −10°C to +40°C

Operating humidity

Up to 75%

Overall dimensions

196 × 238 × 100 mm (with casing)

145 × 89 × 51 mm (without casing)


840 g (with casing)

165 g (without casing)


Warranty service for 24 months from the date of sale.


Learn more

Complete set


Power cable

12 V battery connection cable

Installation kit

Casing (depends on a set)

Quick start guide


10 years

What's in the box:

1 x vhfBridge
1 x Power cable
1 x 12 V battery connection cable
1 x Installation kit
1 x Casing (depends on a set)
1 x Quick start guide