Collection: Alarm Sirens & Hubs

A siren is the loud audible deterrent that sounds during an alarm, while a hub is the control centre that connects and manages your sensors, cameras and devices. Many systems use both, alongside a CCTV / DVR Recorder for footage.

Often both. An outdoor siren with a weatherproof housing alerts neighbours and deters from outside, while an indoor siren startles an intruder inside. Check the decibel rating and whether a strobe is included for added effect.

Louder sirens carry further and are harder to ignore, which boosts the deterrent effect. Check the decibel rating in the product details and consider how far the sound needs to travel for your property.

The hub is the brain of the system: it connects your sensors, cameras and sirens, lets you arm and disarm, and usually sends alerts to your phone. Check which devices and connectivity it supports so it fits your Alarm Systems setup.

It varies: some are mains-powered, some battery-powered, and many have a battery backup so they keep working during a power cut. Check the product details and find power supplies or batteries in Power & Cables.

When paired with a compatible hub, many systems let you arm, disarm and get alerts through an app. Check the product details for app support and connectivity. Plan your network with help from Computing.

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