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💧 Don’t wait for the flood—detect it first with SwitchBot!
The SwitchBot WiFi Flood Sensor is a compact, IP67 waterproof smart water leak detector that instantly alerts you via app and email when leaks or floods are detected. Featuring ultra-sensitive 0.5mm drip detection, a powerful 100dB alarm, and up to 24 months battery life, it requires no hub and integrates seamlessly with major smart home platforms for proactive home protection.















































| ASIN | B0CRRL9DNN |
| Audible Noise | 100 Decibels |
| Battery Description | Alkaline |
| Battery description | Alkaline |
| Best Sellers Rank | #25,469 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #95 in Safety Sensors & Detectors |
| Brand | SwitchBot |
| Built-In Media | SwitchBot Water Leak Detector |
| Color | White |
| Colour | White |
| Compatible Devices | Washing Machine |
| Compatible devices | Washing Machine |
| Control Method | App |
| Customer Reviews | 4.5 out of 5 stars 1,534 Reviews |
| Item Dimensions L x W x H | 5.9L x 2.5W x 5.9H centimeters |
| Item Type Name | 1 x detector |
| Item Weight | 68 Grams |
| Manufacturer | Wonderlabs |
| Maximum Range | 120 Meters |
| Mfr Part Number | W4402000 |
| Model Number | W4402000 |
| Mounting Type | Floor Mount |
| Number of Batteries | 1 A batteries required. (included) |
| Power Source | Battery Powered |
| Power source | Battery Powered |
| Product dimensions | 5.9L x 2.5W x 5.9H centimeters |
| Sensor Technology | Contact Sensor |
| Shape | Detector (1 piece) |
| UPC | 810150540437 |
| Voltage | 3 Volts |
A**.
You need them! Buy them before the leak or you will after!
Yes, this is one of the devices that most people don't prioritize having or just start to discover their existence after a leak happened. Well, I've learned it the hard way after a pipe burst in attic and there was water damage all the way to the ground floor. And funny point is that in life we all pay sometimes a ridiculous amount of insurances, some compulsory, some by choice but often useless. These flood sensors are your kind of equivalent of insurance or better said prevention from consequences of a heavy flood, just long term and relatively cheap. And if we consider what major leaks can cost - then super cheap. Let me quickly summarize the key points so far: 1. Works and works fast. Either leaks or drips, once the liquid touches the sensor you will know instantly. Just make sure you are positioning it correctly and if possible in such places so you avoid false alarms. What do I mean? Well I've placed one of mines in the bathroom corner, close to the toilet. One of the evenings we all simply jumped up of the loudness of the alarm, which was due to my sons poor aiming in the toilet. I'm under impression that loudness and unexpected scream scared him so much that it made the aiming situation even worse haha. By the way don't worry, you can change the alarm volume and duration and this is exactly what I did after this case. 2. Decent app and good notifications. Well, this one is as important as the device itself, because if leaks happen when you're not home - you want to know about this fast and be able to act fast too. Actually, it's important when you're at home too. Beside reminders and emails - the phone pop-ups are very informative and useful. Just make sure you allow them! Setup was quick and straightforward, there is no rocket science behind it. I've tested it so far with Alexa and it works. I expect it to work with other claimed services from Google and Siri, but I'd personally won't rely on this as number one interaction or communications channel. I hope for my Alexa just to notify me when batteries are low - this will be super helpful, as obviously you want these sensor to be on and running and not dead if a leak happens. Connectivity throughout the house for me is also good, but make sure to test it if you live in castles or spread multiple sensors in separately standing granny flats, garages, etc. Don't just trust the claimed 120 meters as it will depend a lot on build materials, interference, etc. To summarise: This is a device that you hope that you will never need, but trust me you want it to be in your house just in case, for peace of your mind, because if a leak happens, you will thank yourself a lot. And if you knew about such sensors and did not buy one - it will be bitter! Anyway, hope my 5 cents help a bit. Stay well and dry haha! Cheers!
C**N
Rilevatore di perdite SwitchBot: semplice da installare, affidabile e intelligente
Ho acquistato il rilevatore di perdite d’acqua SwitchBot a gennaio 2025 per installarlo vicino alla caldaia, così da prevenire eventuali perdite o gocciolamenti. Dopo diversi mesi di utilizzo si è dimostrato un prodotto affidabile e molto utile. L’installazione è semplicissima: si configura in pochi minuti tramite l’app SwitchBot, senza bisogno di hub, e può essere posizionato facilmente anche in spazi ristretti. Il sensore rileva immediatamente la presenza di acqua e invia notifiche istantanee sullo smartphone, oltre ad attivare un allarme sonoro ben udibile. Ottima anche l’affidabilità nel tempo: nessun falso allarme e batteria ancora in ottime condizioni. Per chi ha una caldaia in casa o in un locale tecnico, è una soluzione pratica ed efficace per aumentare la sicurezza e prevenire danni. Rapporto qualità -prezzo eccellente. Consigliato senza dubbi.
C**N
Life saver bit of kit
This is a great little piece of kit that has helped me whilst away. It actually activated whilst I was travelling so I could send somebody around to have a look. Turned out to be a false alarm but thankful for it letting me know rather than coming home to a water leak. It’s easy to use and set up. The iPhone app is straightforward and uses notification alerts. I’ve had this for a few months and the battery seems to be OK. I have recommended this sensor to others and will be buying more in the future. A quick, easy, and cost effective way to protect yourself and your home!
A**T
Totalmente funcional y muy recomendable
Tras varios meses de uso he de indicar mi total satisfacción con el producto. Compré un pack de tres tras haber probado el producto individualmente. Los tengo distribuidos por la cocina, baños y lavadero, de tal forma que me permite detectar cualquier fuga de agua antes de que provoque un problema grave. Especial mención cebo hacer del sensor que coloque junto a la toma de agua de la nevera americana, gracias a lo que me di cuenta de una ligera perdida en el conducto plástico, que de haberse rodo habrÃa provocado un escape grande. Indicar que además del pitido que emite el propio sensor, los tengo vinculados con mi aplicación Alexa, que me permite recibir una aviso de alarma a través los altavoces , además de la notificación al móvil que tengo configurado en la propia app de Switchbot. Por todo ello debo indicar que el producto es totalmente recomendable.
M**C
Funcionamiento eficaz y muy intuitivo.
Ayer recibà el producto muy bien embalado incluye pilas que se ven en el video y una pua para abrir la tapa que va un poco dura para asi conseguir que se estanco. El funcionamiento es muy simple tienes 2 pines arriba y otros 2 abajo que al notar que cierran el circuito disparan la alarma. La vinculación con la aplicación de switchbot a sido casi inmediata simplemente aprietas durante 2 segundo el único botón del dispositivo y ya vincula siguiendo los pasos de la app. Conectas a la wifi crea el equipo pones las credenciales de la wifi de tu casa y a disfrutar. La app es muy clara incluso tienen un punto muy original y deja que lo configuremos para que salte la alarma cuando no detecta agua, ideal para acuarios o sistemas de riego. Las notificaciones me llagan a la perfección a mi smartphone y smartwatch además al añadirlo a la app ya me sale en mi ecosistema de Google home sin problemas. Creo que es un muy buen producto y mas por el precio que tiene.
Trustpilot
3 weeks ago
3 days ago