AJ-VHFBRIDGE - Professional transponder for connecting Ajax systems to VHF radios.

The AJ-VHFBRIDGE is a critical infrastructure module designed to guarantee alarm signal transmission even in the most extreme scenarios. It acts as a transponder, providing your Ajax security system with an additional, completely autonomous communication channel to Central Monitoring Stations (CMS) via VHF radio waves. This is the ultimate fallback solution for remote facilities, industrial sites, or areas where internet connectivity and cellular networks are unstable, non-existent, or susceptible to targeted jamming.

Engineered for professional reliability, the module receives encrypted alarm events from the Hub via the Jeweller protocol and instantly relays them to a connected third-party VHF radio transmitter through its 8 customizable transistor outputs. Housed in a durable casing, it features a built-in 100–240 V power supply and a dedicated internal bay for a 7 Ah backup battery. This ensures the connected radio transmitter remains powered and fully operational during extended blackouts, maintaining an unbreakable link between the premises and the rapid response teams.