---
title: AJAX Security - ReX Jeweller Indoor Radio Signal Range Extender
date: 2024-09-26T21:33:49Z
modified: 2026-05-05T16:47:11Z
permalink: "https://tech.co.za/product/ajax-security-rex-jeweller-indoor-radio-signal-range-extender/"
type: product
status: publish
excerpt: Transmits alarms in 0.3s, Operates up to 35 hours on its backup battery, Remote updates
wpid: 509691
product_brand:
  - AJAX
product_type:
  - simple
product_visibility:
  - featured
product_cat:
  - Security
featured_image: "https://tech.co.za/wp-content/uploads/2024/09/Radio-Signal-Range-Extender.jpg"
---

The Ajax ReX is a radio signal range extender that boosts the range of all Ajax security system devices and manages their communication with the hub. The intelligent radio signal range extender enables users to place Ajax devices at a considerable distance from the hub for protecting multi-story offices, detached buildings, and even production plants. Connecting 5 ReXs to the security system extends its coverage to up to 35 km²

**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

**Maximum effective**
radiated power (ERP)
≤ 20 mW

**Communication range**
up to 1,800 m

**Polling interval**
12–300 s

**Alarms and events**
delivery speed
0.3 s

**Protection against forgery**
Device authentication

**Protection against**
jamming

**Frequency hopping**
Depends on the region of
sales

**In an open space**
Adjusted by