Homebridge TestFlight
Ajax Systems

Ajax Alarm

homebridge-ajax-sia · v1.1.2

VerifiedLocalHomebridge 2.0

Adds an Ajax Systems Hub 2 alarm to HomeKit as a security system with sensors, locally over SIA.

View on npm Source code

What it says it supports

Brands

  • Ajax Systems

Devices it names

  • Ajax Hub 2

Shows up in Apple Home as from its README

Sensor readings in its code

What people report

Ajax security hub devices via SIA and account.

  • Works1
DeviceStatusWhat they saidSource
Ajax hub devicesWorksReads devices of space: battery, tamper, temperature, model
Saved copy
With the Ajax account connected, the plugin reads the devices of the space (one extra call at startup and at each state check): battery, offline, malfunction and tamper flags, temperature, real model and serial number, discovery of detectors that are not in the configuration, fault of the hub, and log lines for sirens, keyfobs and keypads that need attention. All cloud calls now go through a queue. Checked against a real Hub 2 (4G): the index of a device is its SIA zone.

Excerpt saved from GitHub on 2026-10-22.

PR #9 · 2026-10

Gathered from the plugin’s GitHub issues, pull requests, discussions, wiki and docs, and from r/homebridge. These are individual reports, so check the linked thread and the date before you buy.

How it connects

Local

SIA DC-09 protocol from the hub; optional unofficial connection for arm/disarm

Compatibility

Verified by HomebridgeYes
Homebridge versions^1.8.0 || ^2.0.0
Homebridge 2.0Yes
Node.js^22.10.0 || ^24.0.0 || ^26.0.0
Settings in Homebridge UIYes
MatterNo
Platform nameAjaxSia
LicenseMIT

Community signals

Downloads a week458
Downloads a month1,044
GitHub stars0
Open issues0
Closed issues0
Last code push2026-10-18
Latest version1.1.2 (2026-10-12)
First published2026-10-11
Releases7

In ReReHome

Whatever this plugin publishes reaches Apple Home as a normal HomeKit accessory behind your Homebridge bridge, so ReReHome shows and controls it like any other.

Bridges get their own settings page listing the accessories behind them.

Caveats from the README

  • Arm/disarm needs an optional unofficial connection

HomeKit services in its code

Found by scanning the published npm package. A plugin can register a service only for some devices.

  • Battery
  • SecuritySystem
  • TemperatureSensor

Sources

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