The siren on my smart alarm system won't sound anymore
Home Nura guide — category: Home Alarm Systems
Diagnosis
Warning: this symptom can point to a serious hardware defect. Stop using the device until the cause is found. We recommend contacting the manufacturer or an authorized repair centre before you try to use it again.
Recommended steps
Unplug it right away and stop using the device. Document the symptom (photos, video, sounds), then contact the manufacturer's support. If the device is still under warranty, keep your proof of purchase handy: this kind of failure is exactly what the warranty is for.
Repair or replace?
If the problem persists after these checks and the appliance is no longer under warranty, compare the repair estimate with the cost of a new model.
If you decide to replace it
Home Alarm Systems: the shortlist from our buying guide
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Best overall
Ajax StarterKit 4G
Ethernet and 4G hub (two SIMs), battery up to 16 h, long Jeweller radio range and Grade 2 certification.
Photo: © Ajax Systems
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Best break-in detection
Somfy Home Alarm Advanced
IntelliTAG sensors detect vibrations before a door or window opens, with a 110 dB siren and GSM backup included for five years.
Photo: © Somfy
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Best value for Alexa homes
Ring Alarm Pack M (Gen 2)
Simple entry-level kit: built-in 104 dB siren, 24 h battery, Alexa integration. Cellular backup needs Ring Protect.
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Other common problems in this category
These issues affect the same type of appliance — each one comes with a diagnosis and the recommended steps.
- Home Alarm SystemsMy smart alarm system keeps giving false alarms at night
- Home Alarm SystemsHow do I set up automatic re-arming on a smart alarm system?
- Home Alarm SystemsThe arming delay on my smart alarm system is too short, so it goes off as I'm leaving
- Home Alarm SystemsThe event history on my smart alarm system has been empty since the last update
Frequently asked questions
Usually, yes, if the failure shows up during the warranty period and isn't caused by misuse. A product in the Home Alarm Systems category bought new from an authorized retailer normally comes with a manufacturer's warranty: check its length in the manual or on the brand's website. Consumer protection rules also vary by province and territory, so keep your proof of purchase.
If you're still within the store's return window, a return or exchange is usually the fastest fix. After that, the manufacturer's warranty takes over: its customer support can arrange a repair or a replacement. Even outside the warranty, the manufacturer can often repair the device for a fee. Either way, keep your proof of purchase.
Our public methodology lowers the Nura Score /10 of any model in the Home Alarm Systems category whose recurring failures are documented in owner reviews. A model that breaks down too often never tops our rankings, whatever the brand.
Generally, yes. Routine maintenance, such as cleaning, replacing a gasket or recalibrating, is part of normal use and doesn't usually affect your warranty. Irreversible changes to the hardware are what can cause problems. For a product in the Home Alarm Systems category, stick to the steps described in the manufacturer's manual and read the warranty terms before going any further.
When a product fails in its first few months of normal use, the cause is usually a manufacturing defect. Contact the seller or the manufacturer with your proof of purchase and a description of the symptom: for a model in the Home Alarm Systems category that is still under warranty, this is the typical case for a free repair or replacement. Warranty terms vary by brand, so read yours.