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Best smart alarm systems in 2024

The best kit to keep your home safe without expensive installation fees

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Good Housekeeping UK

We updated this roundup in April 2024 to guarantee that our best smart alarm picks were in stock and reflected up-to-date prices.


Installing the best home security system once meant professional fitting and regular maintenance costs. But today’s DIY alarm solutions make it simpler, more affordable and less hassle to keep your smart home safe – ideal when you want to know your home is secure whether you’re away on a weekend break.

Smart locks are ideal for checking the front door is fully secured. In contrast, wifi security cameras and smart video doorbells are great for keeping an eye on your property and for evidence if there’s a break-in. But, if you want more protection, we’d recommend looking at the best smart alarms that are more than an “intelligent” version of a burglar alarm.

With these, you’ll get sirens, sensors, keypads and cameras to level up your home security system. And, because they connect to your wifi, you won’t have to worry about dangling wires everywhere.

Our list of the best smart alarms contains top-performing models vetted by our expert testers, along with the best home security systems picked from our rigorous research:

Best smart alarm systems

  • Yale IA-320 Sync (6-piece)

    Best smart alarm overall

    Yale IA-320 Sync (6-piece)

    £258 at Amazon
    Read more
  • Eufy 5-Piece Home Alarm Kit

    Best affordable home security system

    Eufy 5-Piece Home Alarm Kit

    Read more
  • Ring Alarm 5 Piece Kit

    Best smart alarm for Alexa users

    Ring Alarm 5 Piece Kit

    Read more
  • ERA Protect Deter

    Best smart alarm for simple setup

    ERA Protect Deter

    Read more
  • SimpliSafe Essentials Package

    Best smart alarm system for external monitoring

    SimpliSafe Essentials Package

    Read more

    How the GH Tech Team tests smart alarms

    We assess the performance, ease of use and design of some of the best home security systems available. We test them for simplicity and ease of installation and evaluate the accuracy of any motion and open/close sensors.

    We look at how clear and loud the siren is, how quickly it sends notifications and whether it pairs with other smart home platforms such as Amazon Alexa and Apple HomeKit.

    We also pay attention to how simple the system is to arm and disarm and whether it’s possible to customise which sensors activate at different times, to see if it's suitable for use when you’re at home and away from the property.


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    Best smart alarm overall

    Yale IA-320 Sync (6-piece)

    Yale IA-320 Sync (6-piece)
    Best smart alarm overall

    Yale IA-320 Sync (6-piece)

    £258 at Amazon£270 at John Lewis£278 at B&Q
    Pros
    • Comprehensive system
    • Loud siren
    Cons
    • No external monitoring

    If you’re after the best home security setup, you can’t go wrong with this system. All the components in the box are pre-paired to the main hub, and all of its sensors are quick to trigger.

    We love that it comes with internal and external sirens and that the 200m range of the system also makes it effective for garage and shed protection. The wide range means that this is a system ideal if you need to protect a larger property.

    This kit doesn't include a camera, however, you can buy Yale cameras that work with the alarm as extras – or pick up the 9-piece kit with an indoor camera instead. Expansion is one of the benefits of the Yale ecosystem: you can add up to 40 accessories to a single hub, meaning you can add more sensors and plugs at your own pace.

    Smart home compatibility is strong, with support for both Alexa and Google Assistant – alongside Philips Hue lighting. And even though the initial cost is quite high, we like that the system is usable without a subscription. Via the free smartphone app, you can arm, part-arm and disarm the alarm, and get quick notifications if a sensor is triggered.

    Key specifications

    Works with voice assistantYes - Amazon Alexa and Google Assistant
    Maximum volume100 decibels
    ComponentsHub with internal siren, external siren, keypad, motion sensors x2, door/window sensor
    Time backup battery provides8 hours
    Best affordable home security system

    Eufy 5-Piece Home Alarm Kit

    Eufy 5-Piece Home Alarm Kit
    Best affordable home security system

    Eufy 5-Piece Home Alarm Kit

    Pros
    • Affordable and good value
    • Loud siren
    Cons
    • No backup battery

    One of the best-value home security systems is this five-piece Eufy kit, and it’s particularly good if you already have one of the brand’s doorbells or weatherproof cameras installed at your home.

    Much like the Ring kit on our list, there’s no camera included in this package, but you get enough to get you started: a keypad, two entry sensors for windows or doors, one motion sensor and a tower-shaped base that includes built-in storage.

    Installation is DIY, and you’ll pair the system with the Eufy Security App so you can get quick alerts and notifications when the sensors are triggered, or change the sensitivity so you don’t get lots of false alerts from your dog wandering around downstairs as you sleep.

    This is an ideal system for smaller homes – a single motion sensor works up to nine metres – and there are no additional subscription fees for extra features. If you do add a camera and want to save footage, the base contains up to 16GB of internal storage.

    All of the mounts that you need for installation are in the box and you don’t have to worry about setting it up beside a mains outlet as it uses batteries. According to Eufy, the keypad lasts for six months between charges, while the motion and contact sensors last for up to two years at a time.

    Key specifications

    Works with voice assistantYes - Amazon Alexa and Google Assistant
    Maximum volume100 decibels
    ComponentsHub, keypad, motion sensor, door/window sensors x2
    Time backup battery providesNo backup battery
    Best smart alarm for Alexa users

    Ring Alarm 5 Piece Kit

    Ring Alarm 5 Piece Kit
    Best smart alarm for Alexa users

    Ring Alarm 5 Piece Kit

    Pros
    • Simple to install and use
    • Loud siren
    Cons
    • No external monitoring

    If your home is already full of Alexa gadgets – such as the Ring Doorbell, Echo Show smart display or the compact Echo Dot speaker – it makes sense to stick with the brand for your home security system. Not only will pairing and communication between your products be seamless, but you’ll already know your way around the smartphone app, too.

    We think this 5-piece kit contains everything you need to get started – it includes a Ring base station, a keypad, a contact sensor, a motion detector and a range extender – although you can get more sensors by opting for the seven-piece or the 10-piece instead. You can easily install this by yourself, and we love that there’s no wiring or screws involved.

    With a range of about 76 meters, it’s well-suited to any smaller to medium-sized homes. It works best when paired with other Ring doorbells, cameras and sirens, and it’s worth noting that it’s available with a Ring Indoor Cam (usually £49.99) for no extra cost.

    On test, we found the system was simple to install and sent speedy alerts when something triggered any of the sensors. It's impressive how loud the siren is, but most homes will need to buy extra window/door sensors to create a comprehensive system. If you want a mobile data connection to protect against wifi outages or notifications to chosen emergency contacts if you don’t respond to the alarm – you’ll need to pay for the £8 per month subscription.

    Key specifications

    Works with voice assistantYes - Amazon Alexa and Google Assistant
    Maximum volume104 decibels
    ComponentsBase unit, keypad, window/door sensor, motion sensor
    Time backup battery provides24 hours
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    Best smart alarm for simple setup

    ERA Protect Deter

    ERA Protect Deter
    Best smart alarm for simple setup

    ERA Protect Deter

    Pros
    • Simple to set up and run
    • Easy to expand in the future
    Cons
    • No cameras with starter pack

    This is an ideal security system for smaller homes that you can have up and running in a few minutes. The hub keeps a stable connection by plugging into your router, and the accessories instantly pair by scanning QR codes.

    There’s no camera, keypad or fobs with the basic “Deter” package, but it has everything you need – a pet-friendly motion sensor, window sensor and two remotes alongside the hub. Go for the Alert, Defender and Guardian packages for more sensors, sirens and cameras.

    On test, we liked the solid build of the components and how easy the app is to understand for beginners – it’s plastic-heavy but that keeps it all lightweight. The motion sensor can be set up using the supplied tape, so installation is simple and it’s also a good option if you’re renting. It did a fine job of detecting motion when we tested it at around 10m away, quickly blasting an alert to our phone.

    Even without a big siren in the basic setup, the hub’s speaker is loud enough for indoor use, with a blaring sound that’ll wake even the heaviest of sleepers. You get three months of the ERA Protect Plus subscription for free – and although it costs £8 per month if you want to keep the extra features, it works just fine without paying for a monthly fee, too.

    Key specifications

    Works with voice assistantYes - Amazon Alexa and Google Assistant
    Maximum volume80 decibels (hub), 104 decibels (siren)
    ComponentsBase unit, keypad, window/door sensor, motion sensor, Replica siren
    Time backup battery providesNot specified
    Best smart alarm system for external monitoring

    SimpliSafe Essentials Package

    SimpliSafe Essentials Package
    Best smart alarm system for external monitoring

    SimpliSafe Essentials Package

    Pros
    • Comprehensive and responsive security system
    • External monitoring and loud siren
    Cons
    • Some features require a subscription

    One of the most comprehensive security systems that you can buy, SimpliSafe’s 7-piece kit is an ideal starting point for most homes, coming with a base station, a keypad, a 1080p indoor camera, three entry sensors and a single motion sensor.

    This system is simple to install and we liked its responsive and loud built-in siren. You can check video feeds via the phone app, although we find that most of the best features are locked behind a paywall.

    Unlike the Ring and Eufy kits on our list, it's great that the system includes a security camera and we find that it only alerts you when it spots the same heat pattern as a human (so there are no false alerts from your pets). Expansion is also very well supported – you can add up to 100 official accessories and a total of 10 indoor security cameras to the base.

    While you pay for the luxury, this is the best option if you need total peace of mind that your home is protected at all times. That’s because you can purchase an external monitoring service (from £15.99 per month).

    That means if an alarm goes off a security expert (SimpliSafe is partnered with Securitas) will contact you, attempt to verify if a crime is taking place, and contact the police if necessary. You’ll need to pay for the Pro Premium plan (from £20.99 per month) if you want to add unlimited camera recording to the package, however.

    Key specifications

    Works with voice assistantYes - Amazon Alexa and Google Assistant
    Maximum volume95 decibels
    ComponentsBase station, keypad, motion sensor, wifi security camera, door/window sensors x3
    Time backup battery provides24 hours
    Best security camera system

    Arlo Ultra 2

    Arlo Ultra 2
    Best security camera system

    Arlo Ultra 2

    Pros
    • High-resolution 4K video quality
    • Quick motion alerts and loud siren
    Cons
    • High price when not on sale

    While we’ve mostly focused on home security kits that have open/close or infrared sensors, it’s possible to set up a comprehensive system only using cameras and motion detection. If you want the best possible video resolution for your recordings – delivering crisp 4K footage – we recommend our pick for the top-quality wifi security camera, the Arlo Ultra 2.

    You'll get sharp details during the day and night and if you opt for three or four cameras, you should have enough to cover all of the key indoor and outdoor areas around your property. It’ll send motion alerts to your phone and can identify whether a person, animal or car caused the movement. It's worth noting, though, that this feature is part of the one-year free trial of the cloud video storage plan (which usually costs £9.99 per month).

    We like that it comes with a motion-activated spotlight, and has a few must-have features for video-based security – including 12x zoom and autofocus on moving subjects.

    The subscription plan also lets you set activity zones and comes with camera theft protection insurance, plus 30 days of saved video history. If you don’t want to pay for the membership, you can view the stream from your cameras, get motion alerts and use two-way talk via your phone. This is compatible with Amazon Alexa, Google Assistant and HomeKit, too.

    Key specifications

    Works with voice assistantYes - Amazon Alexa and Google Assistant
    Maximum volume100 decibels
    ComponentsHub, indoor/outdoor cameras x2
    Time backup battery providesRechargeable battery lasts 3 to 6 months
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    Best smart alarm system for smart home gadgets

    Abode Smart Security Kit

    Abode Smart Security Kit
    Best smart alarm system for smart home gadgets

    Abode Smart Security Kit

    Pros
    • Wide compatibility, and works with all voice assistants
    • Fast and responsive
    Cons
    • Features locked behind subscription

    Abode's system is a good option for its compatibility with over 160 smart home products. You can connect it up to the likes of Yale's security cameras and locks to Lifx and Philips Hue smart lights, or connect a Sonos speaker to blast out sound effects – such as a barking dog – when the motion sensor is triggered. From there, you could set it up so that when you leave your home, the system arms itself and turns off your speakers and lights, too.

    On test, the 93db siren built into the hub went off without a delay when anything triggered the window, door or motion sensors – as alerts are beamed to your smartphone. Like most of the kits on our list, installation is easy and mostly wireless, although the hub pairs via the ethernet port on your home wifi router to enable a secure connection.

    To get the most of the Abode kit you’ll need to pay for a monthly subscription, though. The standard plan (£7.99 per month) gives you self-monitoring, unlimited users and access to home automation routines via the app, while the Pro Plan (£13.99 per month, first month free) gives you also opens up cellular backup in case of an internet outage, 10-day video storage instead of seven and all-day professional monitoring that contacts you if the alarm goes off.

    Key specifications

    Works with voice assistantYes - Amazon Alexa, Apple HomeKit and Google Assistant
    Maximum volume93 decibels
    ComponentsHub with internal siren, motion sensor, door/window sensor x2, keyfob
    Time backup battery provides8 hours
    Best home security system for the basics

    Hey Security Kit

    Hey Security Kit
    Best home security system for the basics

    Hey Security Kit

    Pros
    • Good value
    • Works with Alexa and Google Assistant
    Cons
    • No siren

    Most of the best home security systems cost around £250 or more, so this kit that bundles up a video doorbell, motion sensor and two contact sensors for £130 is very good if you want to protect your home on a tighter budget. They all connect straight to your internet router too, so there’s no need for a separate hub, and footage is saved onto an SD card.

    While this is the most basic setup on our list, it’s still perfectly suitable for smaller homes (and rentals) with easy installation. The brand says the doorbell lasts for four months between charges and includes two-way talk, while footage is streamed directly to the Hey app. The doorbell – which records in 1080p – also has night vision and motion detection.

    It’s fairly affordable to expand the system, with extra contact sensors costing £14 each and motion sensors costing £16 each. The brand also sells an external camera for £89 or a floodlight camera for £124.99. While there’s nothing as fancy as professional monitoring or backups that you’ll find on high-end rivals, this is an ideal starter kit for beginners.

    Key specifications

    Works with voice assistantYes - Amazon Alexa and Google Assistant
    Maximum volumeNo siren
    ComponentsVideo doorbell, internal camera, contact sensor and motion sensor
    Time backup battery providesNo backup battery
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    What is a smart alarm?

    A smart alarm is a wireless system that uses your home’s wifi network to connect the different components, which is why they are affordable and you may be able to install one yourself. Like a typical alarm, it will blast out a loud noise that will trigger when something activates the sensors.

    The two most popular types of sensors are open/close and PIR (passive infrared):

    Open/close sensors are for windows or doors. They’re made up of two parts that form a connection when you close the door or window. If the connection breaks – in the event of an intruder opening the door – the siren goes off.

    PIR sensors detect motion using infrared. Put these in a hallway or other entry points to your home and, when it's armed and the sensor sees something move, the siren will sound.

    Some smart alarms include, or work well with, wifi security cameras from the same manufacturer. Not only do these act as motion sensors, but they allow you to see what’s happening in your home if the alarm goes off. This way, you’ll know if it’s a false alert or a real emergency.

    With a traditional burglar alarm, you arm or disarm it via a control panel that’s usually in your entrance hall. But, for a smart home security system, you control it through an app on your phone.

    This means you’ll also be able to adjust settings when you’re away and get sensor trigger alerts straight to your pocket. The one thing to note is that smart alarms do need a hub to get all the different components to connect without wires.


    How much is a smart alarm system?

    For between £200 to £300, you’ll be able to pick up a home security system that includes a hub, a few sensors and sometimes a camera too. We’ve rounded up the best wifi security cameras in a separate list, and have included some kits with cameras in this roundup too.

    On their own, you can expect to pay between £20 to £30 for open/close sensors for your windows and doors, while cameras can start at around £100. Bear in mind that you’ll need to stick to the same brand so that everything connects and you can control it all through one app on your phone.


    Are smart alarms any good?

    Smart home security systems are just as effective as traditional burglar alarms but they don’t always have an external siren for the front of your home, which can act as a deterrent to would-be intruders. While most models offer optional monitoring services to alert police, they’re not as comprehensive as those offered by traditional alarms – these often notify the authorities if the alarm has been triggered and not confirmed as a false alarm.


    Things to consider when buying a smart alarm

    Sensors

    Most smart alarm manufacturers offer a mix of sensors in an alarm bundle, so you’ll need to work out the combination you need for your property.

    Cameras

    If you’re interested in keeping an eye on your home while you’re out, it’s worth looking for a mix of indoor and outdoor security cameras. This way you’ll be able to see whether anyone is sneaking around in your garden or if mischievous pets misbehave in your hallway, and they’ll act as additional motion sensors.

    Keypads and fobs

    Some smart home security systems feature keypads and fobs that make arming and disarming the alarm easier than via an app. This may be useful if you have dog walkers, cleaners or others who may let themselves in and out of your home when you’re not there.

    Sirens

    Most brands should include a loud siren to scare off intruders, but we've noted if this is not included or is an optional extra. We’ve also included the maximum volume below – 85db is comparable to a kitchen blender, while 100db is as loud as a motorcycle.

    Installation

    Most of the models we have tested require that you set them up yourself using the provided sticky pads or screws. Just make sure you put any cameras or sirens high enough on a wall (anywhere between 5ft and 8ft) to make sure your pets don’t set it off.

    Backup battery

    Some smart alarms include a backup battery, which means it will continue to work even if there’s a power cut.

    Compatibility with other devices

    If you’ve got other smart home devices, such as lights or plugs, it’s worth looking for a home security system that’s compatible. For example, you can set up a smart light to turn on if a door is opened or get a radio connected to a smart plug to spring to life if a motion sensor detects any movement. Some will also connect to voice assistants like Amazon’s Alexa, Apple’s Siri or Google Assistant.

    External monitoring service

    Some smart alarms come with an optional subscription service that will monitor your home alarm and contact the emergency services if it triggers and you don’t disarm it. Prices are different for each company - so always check.

    Headshot of Simon Cocks
    Simon Cocks

    Simon Cocks is our Technology Ecommerce Editor, overseeing tech shopping content and strategy across a range of titles including Good Housekeeping, Esquire, Digital Spy and more. 

    Simon specialises in testing the latest smart gadgets, home entertainment gear, headphones, speakers, charging kit and smartphones. 

    Previously, Simon was part of Good Housekeeping’s Consumer Affairs Team, conducting price comparison research, writing detailed advice guides and editing thousands of in-depth reviews for the Good Housekeeping Institute.

    When not testing out the latest gizmos, you’ll find Simon either catching up with the newest releases at his local cinema or out shooting with his beloved compact camera.

    You can follow Simon on Instagram at @simonrcocks and on Twitter at @simoncocks.
     

    Headshot of Carrie-Ann Skinner
    Tested byCarrie-Ann Skinner

    Carrie-Ann Skinner is a technology and smart home reviewer with over 15 years of experience. She's tested everything from wi-fi security cameras and video doorbells to smartphones and laptops, making her best placed to offer advice on gadgets to buy, how to use them, and how to get better deals.

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