Tech specs
vhfBridge Jeweller (without casing)
Wireless module for connecting an Ajax system to third-party VHF transmitters
Device compatibility
CheckCommunication
Jeweller communication technology
Proprietary wireless communication technology to transmit commands, alarms, and events.
Key features:
- Two-way communication.
- Advanced anti-sabotage.
- Block encryption featuring a dynamic key.
- Instant notifications.
- Remote control and configuration in Ajax apps.
Frequency bands
866.0–866.5 MHz
868.0–868.6 MHz
868.7–869.2 MHz
905.0–926.5 MHz
915.85–926.5 MHz
921.0–922.0 MHz
Depends on the sales region.
Maximum effective radiated power (ERP)
up to 25 mW
Radio signal modulation
GFSK
Radio communication range
up to 5,900 ft
Between the module and a hub (or a range extender) in an open space.
Encrypted communication
All stored and transmitted data are protected by block encryption featuring a dynamic key.
Frequency hopping
To prevent radio interference and jamming.
Power supply
Main
100–240 V, 50/60 Hz
Backup
12 V⎓ battery, 4 or 7 Ah
A backup battery is not included. The battery should have a full charge cycle of up to 30 hours.
Calculated battery life
up to 75 hours
VHF transmitter power
10.5–15.5 V⎓, up to 2 A
Key features
Control via smartphone
Users can set up the module configurations and receive notifications in Ajax apps.
Number of potential outputs
8
Compatibility with third-party VHF radio transmitters
Any VHF transmitter with relay inputs can be connected to vhfBridge Jeweller
Adjustable pulse duration
from 0.5 to 255 s
Operation modes
- pulse
- bistable
Output types
- high potential (positive trip)
- low potential (negative trip)
Recommendations
The device is designed for indoor use only.
Sabotage protection
Protection against spoofing
device authentication
Tamper alarm
2 tampers
Notifications on attempts to detach the device from the surface or open the front lid.
Communication loss detection
after 36 s
Detection time depends on the Jeweller or Jeweller/Fibra settings.
Board
Dimensions
5.71″ × 3.5″ × 2.01″
Weight
5.82 oz
Operating temperature range
from 14 °F to 104 °F
Operating humidity
up to 75%
Complete set
vhfBridge Jeweller
Power cable
12 V battery connection cable
Installation kit
Quick start guide