Yale IA-320 Sync Alarm Kit review
Yale IA-320 Sync Smart Home Alarm 6 Piece Kit
By Tom Calder
A solid entry-level layer of security: wire-free to fit, no monthly fee, and loud enough to matter as a deterrent. It's self-monitored though, so treat it as an alert system for you, not a substitute for a professionally monitored alarm.
- Best for
- Households wanting a self-monitored, no-subscription smart alarm that also covers a shed, garage or side access via its 200m wireless range.
- Skip it if
- You want a professionally monitored system with 24/7 call-centre response or an insurer-recognised…
as of 4 Nov 2026, 19:07 GMT · 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.We earn a commission if you buy through the retailer links on this page. It doesn't change our verdict. How we make money →
Researched, not used. We haven't used this product. This review is built from the maker's specifications, owner reports and our own sizing.
What we like
- No subscription or monthly fee for core alerts (app, SMS, email) — but no cellular backup, so a broadband or power outage stops remote push alerts (sirens still sound locally)
- Works with Alexa and Google Assistant; expandable to ~40 devices for larger homes
- 200m wireless range covers outbuildings, not just the main house
Worth knowing
- Base kit ships with only 2 PIR sensors and 1 door/window contact — most homes need extra sensors for full coverage
- Self-monitored only — no professional monitoring/response option, and no insurance discount should be expected
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Our review
Yale's Sync alarm in its six-piece form: a hub that cables to your router, a wire-free external siren box, two PIR motion detectors, one door/window contact and a keypad, with no monthly fee at any point. Its defining feature is a 200-metre wireless range, enough to reach a shed or garage, paired with a hard limit: alerts travel over your broadband and there is no cellular option. It suits a household that wants a visible bell box without a contract.
What is in the box, and what the numbers mean
The kit is one Sync smart hub, one external siren, two motion detectors, one door/window contact and one keypad, plus batteries and fixings. The siren box, powered by four D cells, is rated at 104dB and goes on an outside wall, the visible deterrent most DIY kits lack. Yale quotes a 200m range on all accessories, which is why it names sheds and garages as fair game, and a ceiling of 40 accessories on the hub.
The hub runs from the mains, and Yale's hub page gives no battery backup runtime, so do not count on remote alerts through a long cut. An Ethernet cable is in the box for the router. The Yale Home app handles arming, real-time notifications and a geolocation reminder that nudges you to set the alarm as you leave, and the system works with Amazon Alexa and Philips Hue lighting.
In a British home
One contact goes on the front door; the two PIRs cover the hall and living room, catching anyone who comes through a window you have not sensored. For a back door, patio doors and a reachable window you will be buying contacts one at a time, so a three-bedroom house should budget for them from the start, or look at Yale's nine-piece IA-330 on our door and window alarms page.
Yale makes no pet-tolerance claim for the standard Sync PIRs in this kit, so assume a roaming cat or dog can trigger them. Yale sells a separate Sync Pet PIR that it says reacts only to larger motion, 25 kg and above. The siren box needs screws into an outside wall, so renters should ask first. Yale now sells two alarm families, Sync and the newer Smart Alarm range, on different hubs; check any add-on is listed as Sync-compatible before buying.
Nothing monthly, and what that costs you
There is no plan to buy, no trial that converts, and no feature held back for a fee: push notifications, app arming and voice control are all included. The trade is that there is no cellular path either. If your broadband fails or your router loses power, the wire-free siren still sounds on its own batteries and the keypad still arms, but nobody's phone is told. A router battery covers the power-cut case; a broadband fault has no fix on this platform. Our power cut preparation guide covers the rest of the house.
How it compares
The eufy 5-Piece Home Alarm Kit is the other no-fee option: two entry sensors to Yale's one and a 100dB siren, but that siren sounds from the HomeBase indoors, so there is nothing on the outside wall. Yale's own Smart Alarm Premium Kit is the step up: two contacts, two detectors, a live and a decoy siren, four independent areas, a 1km range, 100 accessories and a 12-hour hub battery, with optional 4G backup from £5 a month. The IA-320 wins on simplicity and the absence of any bill; it loses on sensor count and on any outage that takes your broadband.
Insurance and the police
Police response to alarms in England, Wales and Northern Ireland follows a National Police Chiefs' Council policy covering remotely monitored systems installed and monitored by NSI- or SSAIB-certified companies. A self-fitted, self-monitored Sync kit sits outside it, and there is no monitoring tier to buy. Tell your insurer what you have fitted and expect no premium change.
Our verdict
Buy it if you want a loud box on the wall, an alarm on your phone and nothing on your bank statement, and your home is small enough for one contact and two detectors, or you are happy to add contacts. It is also the pick for an outbuilding within 200 metres. Do not buy it if remote alerts must survive a broadband failure, if you want anyone but you to respond, or if a graded, monitored alarm is what your insurer asks for.
A researched review, built from the maker's specs, manual and UK listings; facts checked 21 Oct 2026. Sources: Yale Home: Yale Sync Hub; Yale Home: Sync external siren (battery powered); Yale Home: Sync Pet PIR motion detector; Yale Home: Smart Alarm Premium Kit (for comparison); Yale Home: Alarm Plan (for comparison); NSI: National Police Chiefs' Council police response policy (summary).
Who shouldn't buy this
Skip it if you want a professionally monitored system with 24/7 call-centre response or an insurer-recognised grade — this alerts you directly, it doesn't dispatch anyone.
Key specs
| Type | DIY wire-free alarm kit |
| Siren volume | ~100–104 dB (external box siren) |
| Power | Mains-powered hub with battery backup |
| Smart features | App control, works with Alexa & Google Assistant |
This is a Researched review: we haven't used this product. We check 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 it isn't for. Commissions never change a rating.
If this isn’t the one
Best for Homeowners wanting whole-house DIY alarm coverage — doors, windows, motion, an indoor camera and an outdoor siren — set up in one go rather than bought piecemeal.
as of 4 Nov 2026, 19:07 GMT · 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.
Best for Renters and homeowners who want an affordable, self-fit smart alarm layer without a monitoring contract
as of 4 Nov 2026, 19:07 GMT · 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.
Best for Renters and first-time buyers who want a quick, no-subscription starter alarm for a flat, small home, or single entry point.
as of 4 Nov 2026, 19:07 GMT · 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.Questions
Does the Yale IA-320 Sync alarm need a subscription?
No. Yale describes Sync as self-monitored with no monthly fees: app arming, real-time notifications, geolocation reminders and Alexa control are all included. There is also no paid tier to add, so cellular backup and professional monitoring are not available on this platform at any price.
How far does the Yale Sync alarm reach?
Yale quotes a 200m range on all accessories, which it says is enough to secure sheds and garages. Treat it as a best case: thick walls and metal-clad outbuildings shorten any wireless link, so try a sensor in position before fixing it.
Does the Yale IA-320 work if the internet goes down?
Locally, yes: the keypad arms and disarms, and the external siren sounds. What stops is the message to your phone, because Sync has no cellular backup. A battery on your router keeps alerts flowing through a power cut, but not through a broadband fault.
Can I add more sensors to the Yale IA-320?
Yes, up to 40 accessories on the hub, including extra door/window contacts, PIRs and sirens. Buy Sync-branded accessories: Yale's newer Smart Alarm range runs on its own hub, so check compatibility on the listing before ordering.
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