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AJAX | ReX Jeweller Wireless Radio Signal Range Extender, Black | 42838

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SKU:
AJ-42838

A range extender that pushes Jeweller coverage a further 5,900 feet from the hub, for the outbuilding, the far wing or the basement where devices sit at the edge of reliable range.

Built for the installer

Marginal radio links are the most expensive fault on a wireless system because they are intermittent. A device that reports for six months and then starts dropping generates repeat visits and no clear cause. Putting a range extender in rather than accepting a weak link removes the whole category.

It carries a built-in rechargeable backup battery giving up to 24 hours of operation with Ethernet disabled, so a mains interruption does not take the extended half of the system offline. Up to five extenders per hub.

Key features

  • Extends Jeweller coverage up to 5,900 ft beyond the hub
  • Removes marginal radio links, which are the most expensive intermittent fault on a wireless system
  • Up to 24 hours on the built-in backup battery so mains loss does not drop the extended devices
  • Up to 249 devices connected through one extender
  • Up to 5 extenders per hub for large or awkward sites

System requirements

Requires an Ajax hub. Powered from 110-240 V mains and designed for indoor use only. Up to 5 range extenders per hub.

Brand:
AJAX
Radio communication range:
Up to 5,900 ft in open space, between the device and a hub or range extender
Devices per extender:
Up to 249
Extenders per hub:
Up to 5
Alarm delivery time:
0.3 s
Power input:
110-240 V AC, 50/60 Hz, up to 6 W
Backup battery:
Built-in rechargeable Li-ion polymer, 3.7 V 2 Ah, up to 24 hours with Ethernet disabled
Sabotage protection:
Tamper alarm on enclosure opening or removal from the mounting panel
Use environment:
Indoor use only
Colour:
Black
Region:
9NA, North America model
Radio protocol:
Jeweller, two-way encrypted wireless
Frequency band (North America):
905.0-926.5 MHz, certified to UL/ULC standards
Radio modulation:
GFSK with frequency hopping
Encryption:
Block encryption with a dynamic key
Communication loss detection:
After 36 seconds
Anti-spoofing:
Device authentication
Warranty:
24 months
When is a range extender needed?
When devices sit at the edge of reliable range, such as an outbuilding, a far wing or a basement. Accepting a marginal link produces intermittent faults that are expensive to diagnose later.
What happens during a power cut?
The built-in rechargeable battery gives up to 24 hours of operation with Ethernet disabled, so devices connected through the extender stay on the system.
How many extenders can one hub support?
Up to 5, each carrying up to 249 devices. Note that only Hub 2 Plus Jeweller and Hub 2 (4G) Jeweller are under UL certification.
Does this device need an Ajax hub?
Yes. All Jeweller devices report to an Ajax hub or a range extender. The device cannot operate standalone and does not connect to a third-party panel directly.
What does the 9NA region code mean?
It is the North America model, operating on the 905.0-926.5 MHz Jeweller band certified to UL/ULC standards. European models on 868 MHz are not interchangeable with it.
How quickly is a lost device detected?
Within 36 seconds. Jeweller polls each device continuously, so a jammed, removed or failed device is reported rather than quietly going offline.

Technical Specifications