SimpliSafe Wireless Home Security Systems | 7 Piece Smart Home Alarm Systems | Mobile App & Works with Alexa | Professional Monitoring Optional review
Renters or homeowners who want a proper DIY smart alarm covering the main entry points, with monitoring left optional rather than forced.
By Tom Calder · Price last checked 20 Sep 2026, 12:29 BST · price-tracked
A capable DIY kit that covers two entry points and general motion out of the box, with a loud local siren included at the kit price — but full app control, alerts and monitoring sit behind an optional Pro Premium plan (up to £360/year), making this more of a step-up pick once that's budgeted for than the cheapest way into home security. It won't reduce insurance premiums either, since SimpliSafe UK is self-install and not an NSI/SSAIB-graded system.
as of 20 Sep 2026, 12:29 BST · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.ⓘ As an Amazon Associate, PreparedBritain earns from qualifying purchases. We may earn a commission when you buy, or a fee when you request a quote, through our links — it never affects what we recommend. Amazon prices come from Amazon's own product data and show the date and time they were retrieved. Prices at other retailers are checked by us, less often. Prices and stock can change at any time, so always check the retailer's price before you buy.
- No contract required — the kit can be bought, installed and used as a stand-alone siren alarm without any subscription
- Quick DIY install with peel-and-stick sensors, no wiring or professional fitting
- Works with Alexa and has a loud base-station siren to deter and alert neighbours
- Full app control, phone alerts, monitoring and cellular backup all need the optional Pro Premium plan (£29.99/month, up to £360/year) — without it you get a local siren only, with no monitored response or app alerts
- Only 2 entry sensors and 2 motion sensors are included, covering two doors/windows plus general motion rather than a whole house — extra sensors are bought separately for larger or multi-entry homes
Who shouldn't buy this
Don't buy this expecting an insurance premium reduction, or if you need guaranteed 24/7 monitored response from day one without budgeting for the optional subscription.
Key specs
| Type | Wireless DIY alarm kit (7 pieces) |
| Siren volume | 100 dB base-station siren |
| Power | Base station mains-powered with roughly 24h |
| Smart features | Alexa compatible; app control |
Our rating is a considered spec-and-evidence verdict: we verify every specification against at least two independent sources, re-check the UK price on a schedule where we can track it automatically, and say plainly who a product isn't for. Commissions never change a rating. Read the full methodology →
Alternatives to consider
as of 20 Sep 2026, 12:29 BST · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.as of 20 Sep 2026, 12:29 BST · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.as of 20 Sep 2026, 12:29 BST · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.Want this cheaper?
Prices for 364 tracked products are refreshed daily — last sweep 20 September 2026. Leave your email and we'll tell you when it drops — nothing else.