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💧 Protect your space before the drip becomes a disaster!
The SwitchBot WiFi Water Leak Detector is a compact, IP67 waterproof sensor that detects leaks as small as 0.5mm and sends instant alerts via app and email without needing a hub. Featuring a 100dB alarm, a 1-meter extended probe for versatile placement, and up to 24 months of battery life, it integrates seamlessly with major smart home platforms to keep your home safe and dry.


















| ASIN | B0CRRL9DNN |
| Battery Description | Alkaline |
| Battery description | Alkaline |
| Best Sellers Rank | 10,498 in DIY & Tools ( See Top 100 in DIY & Tools ) 1 in Water Detectors |
| Brand | SwitchBot |
| Colour | White |
| Compatible Devices | Alexa, Google Assistant, IFTTT, SmartThings, Smartphone |
| Compatible devices | Alexa, Google Assistant, IFTTT, SmartThings, Smartphone |
| Control Method | App |
| Country of Origin | China |
| Customer Reviews | 4.5 out of 5 stars 1,045 Reviews |
| Included Components | AAA Battery, User Manual, Warranty Card, Water Leak Detector |
| Item Dimensions L x W x H | 29L x 32W x 78H millimetres |
| Item Highlight | 100dB Water Alarm, IP67 waterproof, detects 0.5mm leaks, drips & water level, 2.4GHz, no hub, battery up to 2 years |
| Item Type Name | Water Leak Detector |
| Item Weight | 68 Grams |
| Manufacturer | Wonderlabs |
| Maximum Range | 120 Metres |
| Model Number | W4402000 |
| Mounting Type | Floor Mount |
| Number of Batteries | 1 A batteries required. (included) |
| Number of Items | 1 |
| Part Number | W4402000 |
| Power source | Battery Powered |
| Product dimensions | 29L x 32W x 78H millimetres |
| Sensor Technology | Water Sensor |
| Shape | Detector (1 Pack) |
| Sound Level | 100 Decibels |
| UPC | 810150540437 |
| Unit Count | 1.0 count |
| Voltage | 3 Volts (DC) |
A**N
Good product
Does the job as it should. Very simple to use and setup.
N**.
Amazing product; life saver.
One of the best. Already saved me couple of times. Its loud enough for a small house. Very easy to pair with app and good value for money. No connectivity issues yet.
P**Y
All In All: Neat & Functional, but Fiddly
Slightly fiddly to set up and pair with WiFi via the iOS app - not helped by somewhat garbled instructions that have to be downloaded from a QR code. Apple HomeKit integration is not terribly clear. That said, the sensor is neat, very compact and easily placed alongside any boiler, water heater, dishwasher or laundry appliance. Having tested the alarm, the smallest spillage or leak seems to trigger the alarm and/or email alerts (as programmed). The on-board, physical alarm is sufficiently loud, but suitably time-limited so as to not disturb neighbours unduly if you are away from home if a leak occurs!
C**R
Must have for anyone that's had to deal with a leak in the past.
Very easy to set up, and the Wi-Fi notification is brilliant. We had a leak with our washing machine, so this was perfect to put underneath just in case the leak occurred again. Very small in size. Definitely needed if you want peace of mind.
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!
R**.
Not all smart devices are born equally...
Not all smart home devices are born equally....Switchbot make good quality, reliable, tech. As with all these things, nothing is perfect. But Switchbot devices are of a high tech standard and they're, generally, reliable - which is the main thing, really.
S**N
Gives me peace of mind
Sends messages to my phone if a leak is detected, gives me peace of mind
M**D
Works with WIFI without any extra equipment.
Installation is easy. Download the app, register, add the batteries, it auto detects then add your 2.4Ghz wi-fi details. Once it connects to the cloud service and you have allowed notifications you get email and notifications once the detector detects even a small amount of water 0.5mm. Initially on the app I thought there was a problem with WIFI because the service was greyed out saying bluetooth was lost... This is NOT a problem as this situation occurs because the device to save power only connects to WIFI once it detects water and alerts. The alerts came thru very quickly. A good bit of kit for an early alert of water somewhere :-)
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!
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.
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.
A**V
Capteur de fuite bien pensé
J'ai déjà plusieurs thermomètres switchbot dont je suis très content. Ce capteur de fuite parait solide et semble bien marcher suivant mes tests, avec une détection sur le support et au dessus (pour détecter un goutte à goutte avant qu'il y ai une flaque au sol).
T**Y
Fantastic design, price and utility. Best monitoring device for the price you are likely to find.
Brilliant ! I have installed cameras, door devices, routers, temp guages in 2 locations, and this is the only device of the bunch that just works, No complexity, very reasonable, and part of what gives a small discount from insurers. The fact that it does not need a router makes it much more fail resistant. If I get a water leak, I get a notification and an email. If the battery goes low, I get notifications(and they aren't supposed to be hard on batteries). If I go away for a while, I can see battery state on app. I'm rarely this enthused about a product.
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