AJAX vhfBridge
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AJAX vhfBridge


  • vhfBridge is a module for connecting Ajax security systems to third-party VHF transmitters. It provides 8 transistor outputs for connection to third-party VHF transmitters. The device is powered from 100–240V ~ mains and can be operated from a 12V⎓ backup battery.

96.05  excl. VAT

AJAX vhfBridge

Technical specification

General characteristics
Colour White, black
Installation Indoors
Compatible with central units Operates with Hub 2, Hub Plus, Hub 2 Plus
Compatible with range extenders +
Connections
Communication protocol Jeweller: two-sided encrypted radio protocol that transmits events and alarms
Radio signal range Up to 1,800 meters in a line of sight
Operating frequences 868,0−868,6 МГц
868,7–869,2 MHz
863,0–870,0 MHz
(depends on region)
Maximum radio signal power ≤ 25 mW
Third-party VHF radio transmitters integration
Number of potential outputs 8
Output types High-/low-potential outputs (set by the administrator in the app)
Transmission types Pulse and bistable (depends on the output type; the pulse duration is set in the app)
Alarms photo verification No
Recommended VHF transmitters Hawk VHF Alarm Transmitter from FSK Electronics
TX750C from RDC
TR-41 from Puper
Power supply
Main power supply 100–240V~, 50/60 Hz
Backup power 12V⎓ (backup battery not included)
Supported battery type 12V battery with a full charge cycle of up to 30 hours.

The maximum battery size for installation in the body is 150 × 64 × 94 mm

Recommended battery type 12V battery with a capacity of 4 or 7 A⋅h
VHF Transmitter Power 10.5–15.5 V⎓ (maximum output current 2 A)
Anti-sabotage protection
Tamper +
Ping interval 12–300 sec (set by the administrator in the application)
Radio frequency hopping +
Forgery protection +
Body and configuration
Operating temperature range From -10°С to +40°С
Operating humidity Up to 75%
Dimensions 196 × 238 × 100 mm(with a casing)
145 × 89 × 51 mm (without a casing)
Weight 840 g (with a casing)
165 g (without a casing)
SKU: N/A Categories: ,

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