PRODUCT INFORMATION
The Ajax vhfBridge Black Plus 12V 8AH Gel Battery is a transponder that provides a hub with an additional channel to communicate with a monitoring station. The Ajax vhfBridge is a module for connecting Ajax security systems to third-party VHF transmitters/armed response radio transmitters.
The Ajax vhfBridge enables the use of Ajax systems in areas with unstable or no Internet connection such as nature reserves, mountainous and desert regions.
Alarms and events of the system are transmitted via VHF radio waves over a vast distance. The vhfBridge can be used as a primary or a backup communication channel. The Ajax vhfBridge comes with a 12V 8AH Securi-Prod battery that will provide backup for up to 75hours in the event of power failures.
The Ajax vhfBridge Black Plus 12V 8AH Gel Battery is compatible with Hub 2, Hub Plus, Hub 2 Plus, Hub Hybrid, ReX and ReX 2. vhfBridge does not work with Hub, ocBridge Plus, uartBridge and third-party security control panels.
Product Code: 25352.92.BL1
The Securi-Prod 12V 8AH Gel Battery is a backup battery placed inside the vhfBridge casing that will not only provide battery backup for the vhsBridge but it will also power up the radio transmitter and provide battery backup in the event of power failures for up to 75 hours.
FEATURES OF THE AJAX vhfBRIDGE:
- Communication range of up to 1,800 meters in a line of sight
- Alarm transmission within 0.15 seconds
- Powered by a 100–240 VAC mains supply and can operate on a 12 V⎓ battery backup (Battery included)
- Place for a 7ah/7.2ah and 8ah backup battery.
- Perforated areas in the casing for cable management
- 8 adjustable positive/negative trip outputs for sending events to a VHF transmitter
- Tamper detection against opening or removal of unit
- Up to 75 hours of autonomous operation
- Uncompromised security of communication
- Hassle-free installation
INSTALLATION AND SET-UP
Similar to other Ajax devices, vhfBridge connects to a hub in the app by scanning a QR-code. The transponder casing has perforated areas for more organized wiring. Outputs are configurable with Ajax apps for smartphones and computers.
SPECIFICATIONS OF THE AJAX vhfBRIDGE:
| Compatibility | Operates with Hub 2, Hub Plus, Hub 2 Plus, Hub Hybrid, ReX and ReX 2 |
| Classification | Transponder for communication with the monitoring station via a VHF transmitter |
| Installation | Indoors |
| Number of potential outputs | 8 |
| Output types | Positive trip and negative trip (depends on the settings) |
| Transmission types | Pulse and bistable (depends on the settings) |
| Compatibility with third-party VHF radio transmitters | vhfBridge connects to any VHF transmitter with relay inputs |
| Support for photo verification of alarms | No |
| 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 |
| Maximum battery size fitted in casing | 150 mm × 64 mm × 94 mm |
| Battery type | Securi-Prod 12V 8Ah Gel Battery included |
| VHF transmitter power | 12 V DC, 2 A |
| Protecting against forgery | Yes |
| Jamming notifications | Yes |
| Tampers against opening and removal | Yes |
Communication range |
Up to 1,800 meters in a line of sight |
| Two-sided communication between devices | Yes |
| 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 | Yes |
| Detector ping interval | 12–300 seconds |
| Frequency hopping | Yes |
| Maximum radio signal power | ≤ 25 mW |
| Protection class | IP50 |
| Operating temperature range | From −10°C to +40°C |
| Operating humidity | Up to 75% |
| Product dimensions (with casing) | 196 mm × 238 mm × 100 mm |
| Product dimensions (without casing) | 145 mm × 89 mm × 51 mm |
| Product Weight (with casing) | 840g |
| Product Weight (without casing) | 165g |
| Battery dimensions | 151mm x 65mm x 101mm |
| Packaging Dimensions | 245 mm x 218 mm x 102 mm |
| Mass of unit packed | 3750g |
| Warranty | 24 months limited Manufacturer’s warranty. The warranty does not cover batteries |
WHAT’S IN THE BOX:
1 x Ajax vhfBridge Black
1 x Securi-Prod 12V 8AH Gel Battery