
A business alarm system isn’t something most owners think about until something goes wrong — a break-in, a near miss, or a surge in local crime that suddenly makes the risk feel real. By that point, you’re making decisions quickly, which is exactly when mistakes happen.
This guide is for Perth business owners who want to make a considered, informed decision before the pressure is on. We cover what matters, what doesn’t, and what to ask any supplier before you sign anything.
This is the first and most important decision.
An unmonitored system triggers a siren (and sometimes a strobe) when activated. That’s it. There’s no call going out, no response team dispatched, no notification unless you happen to be nearby or someone calls the police.
For a residential garage or a low-risk premises with staff always on site, that might be adequate. For a Perth business with stock, equipment, or sensitive data — particularly one that’s unmanned outside business hours — an unmonitored alarm is largely a deterrent, not a response.
A monitored alarm connects to a 24/7 response centre. When the system triggers, operators are notified in real time. They’ll attempt to contact your key holders, and if they can’t reach anyone or the situation warrants it, they dispatch security responders or police.
The response time difference is meaningful. An audible alarm at an unmanned Perth business on a Sunday night might go uninvestigated for hours. A monitored alarm system with a trained response centre can have someone on site within minutes.
Small commercial premises benefit most from a wireless or hybrid alarm with monitoring and CCTV integration. Wireless systems are faster to install with minimal disruption, and modern wireless hardware is as reliable as hard-wired — the days of wireless alarms being easy to defeat are largely gone with good equipment.
Key features to look for: motion detectors in key areas, door/window sensors on all entry points, duress button if staff work alone after hours, and basic remote arming/disarming via app.
Large internal spaces need carefully positioned PIR (passive infrared) detectors — you can’t just put one in the corner and expect it to cover a 500sqm warehouse. Volumetric detectors or a zoned approach with multiple sensors is standard.
For these sites, perimeter detection before an intruder gets inside the building is worth the additional investment. Beam sensors along fence lines or motion-activated CCTV with alarm integration gives you earlier warning.
Retail has a particular challenge: false alarms from cleaning staff, deliveries outside hours, or poorly positioned motion detectors are common and costly. Insurance companies in WA track false alarm histories, and a premises with repeated false activations can face increased premiums or even monitoring cancellation.
A well-designed retail alarm system uses dual-technology detectors (combining PIR and microwave) to reduce false activations, and integrates with point-of-sale areas and stockrooms separately — so you can arm the shop floor while staff are still working in the back.
Most commercial insurance policies in Western Australia require a monitored alarm as a condition of coverage for burglary claims. Some insurers specify that the system must be installed by a licensed security company and use approved monitoring centres. Check your policy wording carefully — an unmonitored system may void your theft coverage.
Perth councils have specific regulations around audible alarms, including maximum decibel levels and requirements to resolve persistent false alarms. A properly configured, maintained system by a licensed installer keeps you on the right side of these regulations.
Monitoring costs in Perth vary depending on the level of response included. Here’s what typical monitoring contracts cover:
24/7 alarm signal receipt and operator response
Key holder contact (your nominated people to call first)
Police/security guard dispatch if key holders can’t be reached
Monthly or quarterly system checks depending on contract level
Reporting and audit trail of all alarm events
Contracts typically run 12–36 months. Read what happens at the end of the contract term — some monitoring agreements auto-renew and include early termination fees. Ask upfront.
This is where a properly designed security system pays dividends. When your alarm, access control, and cameras are on the same platform:
An alarm trigger can automatically lock all access-controlled doors
A camera can pop up on screen the moment a door sensor activates
You get a single audit log of who accessed which area and when any alarm events occurred
Remote management happens through one app rather than three
If a supplier pitches you standalone systems with no integration capability, ask why. In 2026, integrated security is the norm for commercial premises — not a premium add-on.
📞 Book a Free Business Security Audit — Call Access 1 Security on 1300 855 781 or visit access1security.com.au