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💧 Stay dry, stay ahead — leak detection that’s always on guard!
The SwitchBot 3 Pack Water Leak Detector offers professional-grade leak detection with ultra-sensitive 0.5mm drip sensing, loud 100dB alarms, and direct Wi-Fi connectivity—no hub needed. Its IP67 waterproof design and 2-year battery life ensure reliable protection in humid environments. Compatible with major smart home platforms, it empowers busy professionals to prevent costly water damage with instant alerts and smart automation.















































| ASIN | B0CTJPCZQ7 |
| Audible Noise | 100 db |
| Battery Description | Alkaline |
| Best Sellers Rank | #23,830 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #23 in Water Detectors & Alarms |
| Brand | SwitchBot |
| Built-In Media | Water Leak Detector *3 |
| Color | White |
| Compatible Devices | Alexa, Google, Siri, IFTTT, SmartThings |
| Control Method | App, Voice |
| Customer Reviews | 4.5 out of 5 stars 1,604 Reviews |
| Item Dimensions L x W x H | 1.3"L x 1.3"W x 3.1"H |
| Item Highlight | App & Email Alerts, 100dB Water Alarm, IP67 Waterproof, detects 0. |
| Item Weight | 68 g |
| Manufacturer | Wonderlabs |
| Maximum Range | 1700 feet |
| Model Number | W4402000 |
| Mounting Type | Tabletop Mount |
| Number of Batteries | 1 A batteries required. (included) |
| Number of Items | 3 |
| Power Source | Battery Powered |
| Product Dimensions | 1.3"L x 1.3"W x 3.1"H |
| Sensor Technology | Contact Sensor |
| UPC | 810150540475 |
| Unit Count | 3 Count |
| Voltage | 3 volts_of_direct_current |
A**.
Great little detectors!
I am very pleased with the switchbot detectors. I purchased them because I had an unknown long term leak from my dishwasher that caused about $15k in damage to my home. After the repairs, I needed some peace of mind. The detectors are small and seem to have great battery life. Getting them set up on my Wi-Fi network was simple and I like having the ability to get email alerts in addition to the audible alarm and push notifications from the app. I feel much better knowing that if I have a future leak I will know about it before it causes lots of damage.
R**E
This is a no-brainer!
The SwitchBot WiFi Water Sensor is one of those devices you hope you never need—but you’ll be really glad you have it. Setup is quick, especially if you're already in the SwitchBot ecosystem. It connects over Wi-Fi or Bluetooth, so there’s no separate hub necessary to fuss with, and alerts hit your phone fast when water is detected. I would encourage anyone to connect it to their existing hub if possible. Switchbot has a lot of them (some even built into other smart devices) and I have mine included with not only Switchbot's hub but my Homey Pro. The sensor itself is small and easy to tuck under sinks, behind toilets, near water heaters, or by washing machines. Sensitivity is good—it can catch even small leaks before they turn into expensive disasters. The app notifications are loud and clear, and you can also tie it into automations (like turning off smart plugs or triggering other devices). Mine is under my kitchen sink where I've already had an issue and was kicking myself for not already having this device. Trust me it's very inexpensive for peace of mind!
S**M
Works well, easy to set up to home system
These come with very easy to read instructions. (Written by an English speaking writer). The directions are clear, concise and the monitors are easy to set up and test. They come with batteries. I tested with a semi-damp paper towel prior to putting them in their final position and they alarmed (you can control the loudness - most other sensors you cannot) and sent an alert to my phone. They can sense if the liquid is coming from under the sensor or dripping on top of the sensor. I am very pleased with this product. As side note, you can purchase separately a device that can turn off the water in your house. I may get that at a later time.
J**L
Does Everything that is advertised.
Works perfectly. Easy to set up. Would be five stars if you did not have to reset all the sensors if wi-fi goes down!
M**R
Great so far
Easy to set up!
R**T
Works great, works with Alexa
I have setup ten of the Switchbot water sensors recently, with no glitches in any of them during install! Quick and clean using the Switchbot app, and better yet, the ultimate prize: Alexa recognized all Switchbot sensors almost immediately. Now if there is a leak behind the fridge, Alexa will tell me, through out the house, "check for water behind the fridge"! I used to be a mostly Smartthings house, but after the Bose fiasco, I couldn't get any speakers to work with Smartthings. The Echo Dot Max is a really smart speaker. And Switchbot was recommended to me for an Alexa smart home. You need to use the Alexa Skills for Switchbot. That took me a bit to figure out, but it works. Seriously, decent moisture sensors do work; last year I got a notification that it was wet underneath my tankless water heater. I thought that odd but I checked. Sure enough, some small connection came loose. And I caught it within minutes! One paper towel, and a call to the plumber! The water heater is in an indoor utility room; I would have had serious damage if I hadn't had the early warning from a moisture sensor underneath. Now I have a Switchbot water sensor under every faucet and valve in the house, and they're all programmed for both audio and text notifications through Alexa. That's a nice peace of mind...
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Peace of Mind with Leak Detection
The SwitchBot WiFi Water Sensor was easy to set up and connected quickly to my WiFi without needing a hub. It’s small, waterproof, and very sensitive—I tested it with just a few drops of water and it triggered instantly. The 100dB alarm is loud enough to hear from another room, and the app alerts are a great backup if I’m away from home. I use mine near the water heater, and it gives me peace of mind knowing I’ll get notified right away if there’s a leak. A solid, affordable choice for protecting your home from water damage.
P**R
Easy setup
Make sure you notice it only works with 2.4 g.
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.
A**N
Good product
Does the job as it should. Very simple to use and setup.
M**J
Smarter Schutz vor Wasserschäden
Zuverlässiger Wassermelder mit smarter Steuerung – SwitchBot WLAN Wassermelder im Test Der SwitchBot WLAN Wassermelder ist eine ausgezeichnete Wahl für alle, die ihr Zuhause zuverlässig vor Wasserschäden schützen möchten. Die Einrichtung ist einfach. Ich habe das 3er-Pack gekauft und bin absolut zufrieden mit der Leistung und den smarten Funktionen. ###Einfache Installation & zuverlässige Erkennung Die Einrichtung war in wenigen Minuten erledigt. Der Wassermelder verbindet sich direkt mit dem 2,4-GHz-WLAN und lässt sich problemlos über die SwitchBot-App steuern. Die Sensoren reagieren extrem schnell auf Wasser, schon bei wenigen Tropfen wurde der Alarm ausgelöst. ### Lauter Alarm & App-Benachrichtigungen Mit 100 dB ist der Alarm laut genug, um ihn auch aus anderen Räumen zu hören. Zusätzlich gibt es App-Benachrichtigungen, sodass man auch unterwegs sofort informiert wird. Besonders praktisch: Die Lautstärke des Alarms kann individuell angepasst werden. ### Robustes Design & vielseitiger Einsatz Dank der IP67-Zertifizierung sind die Sensoren komplett wasserdicht und können problemlos in feuchten Umgebungen wie Küche, Bad oder Keller eingesetzt werden. Ich habe sie unter der Spüle, in der Waschküche und neben der Waschmaschine platziert, perfekt, um Lecks frühzeitig zu erkennen. ### Fazit Der SwitchBot Wassermelder bietet einen zuverlässigen Schutz vor Wasserschäden und überzeugt durch einfache Installation, smarte Steuerung und ein robustes Design. Besonders die direkte WLAN-Verbindung und die schnelle Reaktionszeit machen ihn zu einer klaren Kaufempfehlung! Wer sein Zuhause effektiv absichern möchte, liegt mit diesem Wassersensor genau richtig. ✅🔥
M**C
Funcionamiento eficaz y muy intuitivo.
Ayer recibí 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
1 month ago
4 days ago