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Which? Best Buy burglar alarms and smart home security systems

Whether you want a traditional ‘bells-only’ alarm or a next-generation smart security system, we’ve got Best Buys to suit all budgets and needs. Find out how we unearth the best alarms in our testing.

Put us to the test

Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

You rely on a burglar alarm to act as an ever vigilant protector of your home from intruders, but the reality is that some are sleeping on the job.

Our in-depth tests have exposed burglar alarms that fail to warn you promptly that your property has been breached. Others, meanwhile, are so trigger happy that they go off needlessly when your cat runs past the sensor.

Best Buys are only awarded to the most impressive models in our tests. Bells-only alarms are no-fuss options that provide a good visual deterrent to burglars, backed by a loud alarm to scare them off. We’ve got Best Buys of those for under £100.

If you want greater flexibility, you could go for a smart alarm system These enable you to keep an eye on your home via an app. We have Best Buys starting at just over £200.

Our burglar alarms and smart security system test points you to the best products for your budget.

  • You don’t need to spend a fortune on an alarm system - our highest scoring Best Buy burglar alarm is also the cheapest we’ve tested.
  • All Best Buy burglar alarms and smart security systems can be managed on your own. You can even install them yourself if you’re handy around the home.
  • Our reviews warn you if there are additional costs to bear in mind, such as subscription contracts or possible installation fees.

What makes a Best Buy burglar alarm and smart home security systems?

Our lab experts spend hours assessing every burglar alarm and smart security system to unearth the models worthy of being Best Buys.

The best alarms have passed a barrage of tests and are easy to use, will effectively detect intruders and warn them off with a very loud alarm.

Our tests cover a range of areas, including;

  • Ease of use: We let you know if you can install the alarm yourself, or would need to pay for a professional. Then we assess how easy the alarms are to use, such as arming and disarming at a control panel, via an app or key fob.
  • Alarm sensitivity and loudness: We asssss the time between the alarm detecting an intruder and going off. The alarms range from a weak 82 decibels to an ear-splitting 104db. We check if your cat can accidentally set off the alarm.
  • Data security: With all smart alarms we check whether they protect your home security from hackers. Our reviews clearly point out if there are any causes for concern, such as major vulnerabilities.

Reviews you can trust

We’ve tested a wide range of brands, from well known alarm makers, such as Yale and ERA, and new smart home companies, including Ring, Netatmo and Hive.

If you’re not sure what type of burglar alarm you want, including if a smart alarm is right for you, head over to our burglar alarm advice guides to help you choose.

Which? is independent – we work for you, the consumer, so you can be sure that our product recommendations are influenced only by our test results.

We're not influenced by third parties and we don't accept freebies from product manufacturers or retailers.

We buy all the products that we test ourselves, so our advice helps you to make the right choice first time and avoid costly mistakes.

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