AJAX | vhfBridge, weiss

Module for connecting Ajax security systems to FM radio transmitters.

Available with and without housing.

Immediate alarm delivery without internet access

The vhfBridge transponder provides the hub with an additional communication channel with the control center via VHF radio waves. This allows the Ajax security system to be installed even in places with unstable or non-existent Internet connection, such as mountains, nature reserves or desert regions. Alarms and system events are transmitted over dozens of kilometers in a fraction of a second. vhfBridge can be used as a primary or secondary communication channel.

Any FM radio transmitter with relay inputs can be connected to the vhfBridge

Recommended FM stations:

• FSK Electronics, Hawk VHF alarm transmitter
• RDC, TX750C
• Puper, TR-41

Well thought-out autonomy

A backup battery with up to 7 Ah can be installed in the vhfBridge housing, which can supply a VHF radio transmitter with up to 2 A. This eliminates the need to equip the transmitter with a battery. In addition, the frequency of maintenance work is reduced. In the event of a power failure at the site, the transmitter and the transponder work for up to 75 hours4 with a backup battery and continue to transmit events to the control center.

• Up to 75 hours of operation during power failure
• Cavity for the battery with a capacity of up to 7 Ah

Configurable signal transmission

Get only the events you want. Each vhfBridge output can be configured in the Ajax app: create an event or turn it off.

Uncompromising communication security

The vhfBridge communicates with the hub via the encrypted Jeweller radio protocol. This ensures smooth communication between all security devices. The radio protocol uses polling intervals to synchronize the communication sessions of the devices, ensures authentication to protect against counterfeiting and integrates encryption to protect against data theft.

• Connection to the hub over a distance of up to 1800 meters
• Alarm delivery in 0.15 seconds
• Query interval from 12 seconds

Intelligent assembly

Like other Ajax devices, the vhfBridge connects to the hub via the app by scanning the QR code. Perforations are provided in the transmitter housing for proper cabling. The outputs can be configured using the Ajax apps for smartphones and computers.

Product features:

• AJAX vhfBridge for the HUB, Black
• Enables communication without internet
• Connection via FM radio transmitter
• 8 outputs
• Available with or without housing

Technical data:

Scope of delivery:

• 1x AJAX | vhfBridge, black