Ajax ReX: greater range for your alarm system
Place detectors well beyond the radio range of the hub. The ReX amplifies the Jeweller signal and manages the connected devices as a second decision centre.
The ReX extends the range of any Ajax system using the secure Jeweller protocol, up to 1,800 metres per booster in open space. This lets you protect multi-storey offices, detached buildings and production sites. With five ReX units in one system, you extend the coverage to 35 km². Please note: the ReX does not support photo verification or MotionCam detectors. If you need these, consider the ReX 2.
What the ReX offers
Up to 1,800 m per repeater
Two-way communication via the secure Jeweller protocol, measured in open space.
Coverage up to 35 km²
Five ReX units in one system together cover up to 35 km² of protected area.
Second decision centre
Runs on OS Malevich, manages up to 249 devices and takes over critical decisions.
Siren on fault
If the connection to the hub is lost, the ReX can activate the siren itself.
Up to 35 hours of backup
The built-in backup battery keeps the booster running during a power failure.
Simple installation
Scan the QR code, select the devices, done. No dismantling thanks to the SmartBracket.
The booster at a glance
The ReX in white and black, with the SmartBracket mounting panel.
The second decision centre
The ReX integrates the connected devices into an autonomous group within the system. It runs on OS Malevich and is therefore as capable as the hub: the repeater takes over control as soon as the connection to the hub is lost, and can activate the siren to deter an intruder.
Connecting is simple. Scan the QR code in the Ajax app, give the booster a name and select which devices should work through the ReX. Then place it in a secure location using the supplied SmartBracket, without dismantling the housing.
Key specifications
| Type | Wireless radio signal repeater |
| Protocol | Jeweller |
| Number per hub | up to 5 (depending on the hub model) |
| Devices per booster | up to 249 (depending on the hub model) |
| Radio range | up to 1,800 m in open space |
| Alarm delivery time | 0.3 s |
| Communication loss detection | after 36 s |
| Photo verification | not supported |
| Main power supply | 110-240 V, 50/60 Hz (up to 6 W) |
| Backup battery | built-in Li-ion 2 Ah, up to 35 hours |
| Tamper | tamper alarm, spoofing protection, anti-jamming |
| Housing | for indoor use only |
| Dimensions | 163 × 163 × 36 mm |
| Weight | 330 g |
| Certification | EN 50131 (grade 2), RED, RoHS, EMC, LVD |
Complete the system
ReX or ReX 2?
Two signal boosters with a clear difference in capabilities. Choose based on your hub and whether you need photo verification.
| Feature | Ajax ReX | Ajax ReX 2 |
|---|---|---|
| Protocols | Jeweller | Jeweller + Wings |
| Photo verification (MotionCam) | No | Yes |
| Ethernet | No | Yes, up to 100 Mbps |
| Devices per booster | up to 249 | up to 199 |
| Radio range (open space) | up to 1,800 m | up to 1,700 m |
| Max. per hub | up to 5 | 5 |
| Backup battery | up to 35 hours | up to 38 hours |
| Compatible hubs | Ajax hubs | Hub 2 and Hub 2 Plus |
| View | This page | Ajax ReX 2 |
The ReX supports more devices and has a slightly greater radio range; the ReX 2 adds photo verification (MotionCam) and an ethernet connection and works with the Hub 2 generation.
Frequently asked questions
Does the ReX support MotionCam detectors?
No. The ReX only works with the Jeweller protocol and does not relay photo verification. If you want to use MotionCam, choose the ReX 2.
What is the difference from the ReX 2?
The ReX 2 supports Wings and photo verification (MotionCam) and has an ethernet port. The ReX uses Jeweller only, but handles more devices (up to 249) and has a slightly larger radio range (up to 1,800 m).
How much does the ReX extend my range?
Up to 1,800 metres per repeater in open space. With five ReX units in one system, you extend the coverage to 35 km².
Does the ReX keep working during a power failure?
Yes. The built-in backup battery keeps the repeater running for up to 35 hours, so your security stays online.
Which hub do I need?
The ReX works with the Ajax hubs. The maximum number of repeaters and connected devices differs per hub model.
In the box
ReX Jeweller
The signal booster in white or black.
SmartBracket
Mounting panel for quick installation without dismantling.
Power cable
For the mains connection (110-240 V).
Installation kit + quick start guide
Mounting materials and the quick start guide.
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