AJAX VHF Bridge Jeweller Transponder
SKU: 18486287241

AJAX VHF Bridge Jeweller Transponder

Sale price$1089.86 Regular price$1210.95
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Description

AJAX VHF Bridge Jeweller TransponderEnsure Unfailing Alarm Delivery with the AJAX VHF Bridge Introducing the AJAX VHF Bridge, a crucial transponder that provides your Ajax security system with an additional, ultra reliable channel to communicate with a monitoring station. Designed for ultimate resilience, this module allows you to use Ajax systems in locations with unstable or non existent internet connections, such as nature reserves, mountainous regions, or remote properties. By

Ensure Unfailing Alarm Delivery with the AJAX VHF Bridge

Introducing the AJAX VHF Bridge, a crucial transponder that provides your Ajax security system with an additional, ultra-reliable channel to communicate with a monitoring station. Designed for ultimate resilience, this module allows you to use Ajax systems in locations with unstable or non-existent internet connections, such as nature reserves, mountainous regions, or remote properties. By transmitting alarms and system events over VHF radio waves across vast distances, the vhfBridge ensures your security is never compromised, serving as either a primary or a backup communication link.

Core Features & Benefits

  • Internet-Free Alarm Transmission: Guarantees that alarms are sent to the central monitoring station via VHF radio waves, completely independent of an internet connection.
  • Universal Compatibility: Seamlessly integrates with any third-party VHF transmitter that has relay inputs, offering you flexibility and choice.
  • Proprietary Jeweller Radio Technology: Leverages Ajax's secure, two-way communication protocol. It features block encryption, protection against spoofing, and frequency hopping to prevent jamming, ensuring all data is secure.
  • Extended Communication Range: Achieves a remarkable radio communication range of up to 1,800 meters (5,900 ft) in open space between the module and the Ajax hub or a range extender.
  • Impressive Power Autonomy: In the event of a power outage, an optional 7 Ah backup battery (not included) can power both the vhfBridge and the connected VHF transmitter for up to 75 hours.
  • Advanced Anti-Sabotage: The device is equipped with two tampers that provide instant notification of any attempt to open the casing or detach it from the surface.
  • Effortless Configuration: All 8 transistor outputs are easily configured through the user-friendly Ajax mobile and desktop apps, allowing you to specify exactly which events trigger an alarm.

Technical Specifications

Feature Specification
Classification Transponder for communication with a monitoring station via VHF transmitter
Installation Indoor only
Hub Compatibility Hub Plus, Hub 2, Hub 2 Plus, Hub Hybrid
Range Extender Compatibility ReX, ReX 2
Communication Technology Jeweller (868.0–868.6 MHz)
Radio Communication Range Up to 1,800 m (5,900 ft) in an open space
Number of Outputs 8 potential transistor outputs
Output Types High potential (positive trip) & Low potential (negative trip)
Operation Modes Pulse and bistable
Main Power Supply 100–240 V, 50/60 Hz
Backup Power 12 V⎓ battery, 4 or 7 Ah (not included)
VHF Transmitter Power Output 10.5–15.5 V⎓, up to 2 A
Sabotage Protection Device authentication against spoofing, 2 tampers for casing intrusion/detachment
Operating Temperature Range From -10°C to +40°C (14°F to 104°F)
Operating Humidity Up to 75%
Enclosure Protection Class IP40
Dimensions 196 × 238 × 100 mm (7.72″ × 9.37″ × 3.94″)
Weight 840 g (29.63 oz)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 18486287241

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4.2 ★★★★★
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Chris Cook
Houston, US
★★★★★ 1
You get what you pay for
Color: 6692:Silver strap&blue dial
I thought I'd give this a try but when I took it out of the box, it was the cheapest built watch I ever bought. You get what you pay for. It was supper light so I don't believe it was stainless wrist band. Felt more like potted metal. Never again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 19, 2025
B
Verified Purchase
byron j wilkinson
Boise, US
★★★★★ 5
Good basic watch
Smaller than I expected but super nice we'll built. Offers day in English and Spanish. Stylish but simple. Easy to read the time and date.
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Reviewed in the United States on February 8, 2026
D
Verified Purchase
DX Victor
Lowell, US
★★★★★ 5
Classy, comfortable, accurate
My previous Casio has gotten pretty beat up. So I wanted another Casio without spending a lot. I also need it do have both day and date. A metal band is a must. I sweat a lot and leather doesn’t last. The band needs to adjust perfectly to my relatively thin wrist. First, I like the style of the face - simple and easy to read. The watch isn’t real fancy which is fine with me. The band took a bit of adjusting and came out perfectly. It’s not too heavy and retains good accuracy. Can’t beat the price. Only thing I wish it had was 24 hour sub-dial instead of elapsed minutes. I think it’s a great value and a nice looking everyday watch.
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Reviewed in the United States on April 17, 2023
L
Verified Purchase
Lazarus 43
Port Orchard, US
★★★★★ 4
Very nice watch but hands need to be larger and luminous
It’s a very nice looking watch. Band adjustment is not difficult using the tools that come with th watch- and it’s very attractive. The watch could stand to be improved by by making the Hands larger and by making them luminous. The watch is very comfortable to wear . It may be a little large for a small wrist but it’s not gigantic. I haven’t checked the accuracy but it appears that the watch doesn’t lose or gain time.
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Reviewed in the United States on November 20, 2025
A
Verified Purchase
Avery Waggoner
Houston, US
★★★★★ 5
Literally just a good watch, absolutely nothing to complain about
Ive had two versions of this watch, the leather strap version and this metal version. The only weak point on my old watch was the leather strap. This thing is simple, elegant, and practical, couldn't really ask more from a watch. It holds up pretty well and doesn't scratch too easily (if you have a labor intensive job you might want a glass protector). I've had mine for a couple months now and it only has a few very faint scratches but that's just because im rough on my watches lol. I would recommend this to literally anybody
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Reviewed in the United States on January 20, 2026

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