GS559A Smart Smoke Alarm for Home, WiFi Fire Alarm, Silence Button

Update : Having been in touch with Meross customer service, it appears one of my alarms was faulty. Meross have replaced this very quickly and the new alarm works as it should. The support from Meross has been fantastic, and I have renewed faith in their products. I have now started buying more from their range. Original review: I really should have trusted other's reviews. These alarms are fully featured for a sensible (cheap?) price, but I don't feel I can rely on them. I wanted multiple alarms that were interlinked (when one is triggered, all will sound) and would also send a notification to my phone. I bought 2 alarms (and one hub). When I use the app to test the alarms, one sounds, but the other doesn't. I don't know if it is faulty, but another reviewer reported that only the first alarm installed works in test mode... Why would that be the case? I have requested support from Meross, and will report back... Overall, at the moment, I don't feel confident enough to trust the alarms to work in an emergency. If they can't be controlled from the hub, how can I expect them to let the app know when there's a fire? Or for them to speak to each other? I may pluck up the courage to test them with some real smoke, but I don't really want to do that!

Integrates nicely with Apple Homekit (note you need to purchase a separate hub to do this). Setup was a breeze. My only gripe relates to the test facility, which you do from the app. I've got two of these alarms, and whilst one of them chirps reassuringly when you test it from the app, the other one doesn't and I have to manually test it by pressing the button. The audible alarm is not the loudest I've ever heard, but you'll get an alert on your phone anyway, so not a huge deal. Not a perfect product then, but if Apple Homekit is your thing, it's an inexpensive and effective smoke alarm.

Great item, works well

I am writing to express my frustration and disappointment with the recent experience I had with Meross smoke detectors and hub system. Initially, I purchased a hub paired with one smoke detector, which worked perfectly. Based on this positive experience, I placed another order for three additional smoke detectors. However, when I attempted to test the alarms using the app, only the initially purchased smoke detector sounded, while the three additional ones did not. After spending several hours resetting and reinstalling the system without any success, I contacted your support team for assistance. To my dismay, I was informed that there are two versions of the smoke detectors: a new version and an old version. It was brought to my attention that the hub and smoke detector I initially purchased were of the new version, whereas the three additional smoke detectors I received were of the old version. This incompatibility caused the additional smoke detectors to be non-functional with my hub. I find this level of product incompatibility to be both unacceptable and extremely frustrating for customers. It is incredibly disappointing that I spent several hours troubleshooting a problem that stemmed from a lack of communication about product versions and compatibility. Furthermore, it is baffling and unacceptable that such incompatible products are still being sold to customers without any warning or clarification. This has caused me significant inconvenience and frustration.

Setup was easy enough but it randomly goes off for no particular reason every few months. Also, don't vape around it as that'll set it off.

Very good alarms giving peace of mind and they also connect to apple home (HomeKit) which is a massive bonus

Love these… the final piece in my Smart Home (for now)… connected to HomeKit in seconds and was up and running in minutes. I used Energiser Industrial AA batteries instead of the Acme no brand ones supplied so I know they will last a long time between battery cycles. Recommended.

I initially purchased the Interlinked Smoke Alarm and Hub, along with an additional Smoke Alarm, last year. Unfortunately, I encountered the same issue as many other customers, where the hub was a newer version than the additional smoke alarm, though it was compatible with the smoke alarm that came with the hub. Fortunately, upon contacting Meross, they confirmed that this was an issue with the versions being sold last year. They promptly rectified the situation and issued a refund for the smoke alarm with the older firmware version. I now have two smoke alarms of the same version and a compatible hub, and everything is functioning perfectly—thanks to the support staff at Meross for their assistance. The hub and alarms are straightforward to set up and seamlessly integrate into Apple HomeKit if you use it. The test feature from your phone works effectively, allowing you to hear the alarms individually and check the battery percentage indicator. Some users have mentioned that the alarms aren't loud enough during tests, but this is because the test is only intended to confirm connectivity and functionality at a lower level with different sound. As per the instructions, pressing and holding the physical button on each smoke alarm for over 10 to 15 seconds (can't remember how long) increases the volume to its maximum decibel level, and they are adequately loud, comparable to most smoke alarms. I have one smoke alarm in my kitchen and another on my upstairs landing. The kitchen alarm was triggered once due to a household member burning something while cooking, and it was very loud. I received an alert on my phone indicating smoke in the kitchen, and the upstairs alarm also went off. The alarms are performing their intended functions effectively. If you use HomeKit, you can set an automation to turn on all your HomeKit lights and lamps when any smoke alarm goes off, which is useful in case any fire happens at night and you need to see where you are going, providing additional peace of mind. I have not experienced any false alarms over the past two months of using these alarms. I hope this continues, and I definitely recommend these interlinked alarms.

**Recensione per il rilevatore di fumo smart** Questo rilevatore di fumo smart è davvero un ottimo prodotto! Funziona perfettamente ed è molto reattivo nel segnalare eventuali fumi o situazioni di rischio. La possibilità di collegarlo via Wi-Fi è un grande vantaggio: grazie all’app, posso ricevere notifiche in tempo reale anche quando non sono in casa, il che mi fa sentire molto più tranquillo. L’installazione è stata semplice e veloce, e il design è moderno e discreto, perfetto per qualsiasi ambiente. È un dispositivo indispensabile per la sicurezza della casa, altamente consigliato!

Der Smart Rauchmelder von Meross bietet eine gelungene Kombination aus moderner Technologie, Sicherheit und einfacher Bedienung. Als smartes Gerät, das sich in ein bestehendes Smart-Home-System integrieren lässt, hebt er den Brandschutz auf ein neues Level. Nach einigen Wochen intensiver Nutzung teile ich meine Eindrücke. Design und Verarbeitung Der Rauchmelder hat ein schlichtes und modernes Design, das sich unauffällig in jede Raumgestaltung einfügt. Die Verarbeitung wirkt hochwertig, und das kompakte Format ermöglicht eine einfache Montage an Wand oder Decke. Die mitgelieferten Montagematerialien machen die Installation unkompliziert. Einrichtung und Kompatibilität Die Einrichtung des Meross Rauchmelders ist kinderleicht. Über die Meross-App (verfügbar für iOS und Android) lässt sich das Gerät innerhalb weniger Minuten verbinden. Besonders hervorzuheben ist die Kompatibilität mit gängigen Smart-Home-Plattformen wie Apple HomeKit, Amazon Alexa und Google Home. Ein Pluspunkt ist die direkte Verbindung über WLAN, wodurch keine zusätzliche Bridge erforderlich ist. Sobald der Rauchmelder mit dem WLAN verbunden ist, können Nutzer Benachrichtigungen in Echtzeit auf ihr Smartphone erhalten – ein entscheidender Vorteil, um auch unterwegs informiert zu sein. Funktionalität und Leistung Der Rauchmelder bietet zuverlässige Raucherkennung und löst einen lauten Alarm aus, sobald Rauchpartikel erkannt werden. Die Push-Benachrichtigungen auf das Smartphone informieren sofort, selbst wenn man nicht zu Hause ist. Ein weiteres Highlight ist die Selbsttest-Funktion, die direkt über die App durchgeführt werden kann. Das gibt zusätzliche Sicherheit, dass der Melder jederzeit einsatzbereit ist. Auch der Batteriestatus wird in der App angezeigt, sodass man rechtzeitig über einen Wechsel informiert wird. Sicherheitsmerkmale Der Meross Rauchmelder erfüllt alle nötigen Sicherheitsstandards und bietet zuverlässigen Schutz vor Rauchentwicklung. Dank der smarten Funktionen geht die Sicherheit über den Standard eines herkömmlichen Rauchmelders hinaus. Besonders in großen oder mehrstöckigen Häusern ist es von Vorteil, dass der Melder Benachrichtigungen in Echtzeit versendet. Batterielaufzeit und Wartung Der Rauchmelder wird mit langlebigen Batterien betrieben, die mehrere Monate halten. Die App zeigt den Batteriestatus an, sodass man keine bösen Überraschungen erlebt. Ein akustisches Signal und eine Push-Benachrichtigung warnen rechtzeitig, wenn die Batterien ausgetauscht werden müssen. Preis-Leistungs-Verhältnis Im Vergleich zu herkömmlichen Rauchmeldern ist der Meross Smart Rauchmelder preislich im mittleren bis oberen Segment angesiedelt. Angesichts der zusätzlichen Funktionen wie Echtzeit-Benachrichtigungen, App-Steuerung und Smart-Home-Integration ist der Preis jedoch gerechtfertigt. Fazit Der Smart Rauchmelder von Meross ist eine ausgezeichnete Wahl für alle, die mehr Sicherheit in ihrem Zuhause wünschen und dabei nicht auf smarte Technologie verzichten möchten. Die einfache Einrichtung, die zuverlässige Raucherkennung und die nahtlose Integration in Smart-Home-Systeme machen ihn zu einem unverzichtbaren Gerät für moderne Haushalte. Empfehlung: Perfekt für alle, die ein smartes Zuhause absichern möchten, und besonders nützlich für Vielreisende, die auch von unterwegs über potenzielle Gefahren informiert werden möchten.

Después de 2 años el detector se activo falsamente en 3 ocasiones. Tras consultar con el fabricante se ofrecieron muy amablemente a enviarme otro equipo de sustitución sin ningún gasto por mi parte. Desde luego será mi fabricante preferido en un futuro pues se junta calidad del producto (tengo instalados 5 sensores) y el servicio técnico perfecto. Un saludo

Un bon détecteur de fumée est connecté que j’ai eu aucun mal à configurer sur l’application Meross. Édit décembre 2025 : J’ai eu un petit incident avec un détecteur qui s’est déclenché de manière intempestive (la nuit). J’ai alors contacté le service client Meross. Après un interrogation des logs ils n’ont pas trouvé le problème, mais ils ont accepté de me l’échanger contre un neuf. Très bonne réactivité, je suis très content et continuerai d’acheter des produits chez Meross

I am happy with the product and service! I bought 4x, and 2x were faulty. after contacting MEROSS they right away shipped 2x additional units to me!