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💧 Stay dry, stay smart — leak detection that’s always a step ahead!
The SwitchBot WiFi Water Leak Detector is a compact, IP67 waterproof smart sensor that detects water leaks as small as 0.5mm with a 3.28ft sensing cable. It delivers instant 100dB alarms and real-time app/email alerts over 2.4GHz WiFi without requiring a hub. With up to 2 years battery life and compatibility with Alexa, Google, Siri, and SwitchBot ecosystem, it offers proactive, smart home water protection for any space.















































| ASIN | B0DMW6G2LY |
| Audible Noise | 100 db |
| Battery Description | Lithium |
| Best Sellers Rank | #21,861 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #22 in Water Detectors & Alarms |
| Brand | SwitchBot |
| Built-In Media | Water Leak Detector with Cable *3 |
| Color | White |
| Compatible Devices | Smartphone, SwitchBot Ecosystem |
| Control Method | App |
| Customer Reviews | 4.3 out of 5 stars 1,844 Reviews |
| Item Dimensions L x W x H | 1.3"L x 1.3"W x 3.1"H |
| Item Highlight | No Hub, 100dB Water Alarm, App & Email Alerts, IP67 Waterproof, detects leaks/drips/water levels, 2. |
| Item Weight | 259 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 | 810150542967 |
| Unit Count | 3 Count |
| Voltage | 3 volts_of_direct_current |
J**N
Worked exactly as advertised
Worked exactly as advertised. Since my HVAC unit is located inside my apartment, I decided to place one of these devices underneath it for added protection. The setup process was quick and easy, and the device supports Wi-Fi connectivity as well. After testing it, I received all notifications promptly and without any issues. Overall, it performs reliably and provides great peace of mind. Highly recommended!
J**G
Much much better than I could have hoped for!
This thing is marvelous! We have an HVAC system in the ceiling which caused a leak which damaged the ceiling. That's all fixed now, and we've installed this battery powered, WiFi leak detector's sensor right in the spot where the water will drip. Really simple to install, and we already had a SwitchBot mini-hub. Now, if there's a drip, the alarm will ring a 100DB (loud) , but even more importantly, it will trigger a routine in Alexa! So now, if there's an issue, Alexa will announce throughout the house, what the issue is, and (because we included the directions) instruct whoever's here to shut off that HVAC immediately to prevent further damage! If I had elderly parents living alone, I'd consider putting a few of these in places where there might be an issue with water, such as under their sinks, beneath their dishwasher, on the floor next to the washing machine, etc. Then, if there was a problem, it can also send an email to the responsible family member to alert them! BTW, it's not just 1 sensor. There's a sensor built into the unit, but there's also another one connected by a 2 foot cord. You could put the unit under the kitchen sink AND the sensor on the floor under the dishwasher! Lastly, and this is also interesting, you CAN set the sensor to work to detect when there is NOT water present. Maybe on the edge of an in-ground pool, that if the water gets too low (below the skimmers) that someone would be notified, since running the pools filtration system without sufficient water can result in damage to the equipment. Actually, if you had the pool equipment controlled by Alexa, you could use the "dry" situation to shut down the pool equipment, thereby protecting your equipment automatically!
B**.
Would recommend
I am not a techy and was able to set these up with relative ease. They are excellent at detecting water immediately. the problem is getting alerts (not alarms, but texts and emails) either because they have gone off-line or some other reason which I can’t explain. I like that they come with or without a cord that can get tucked in somewhere where the device itself cannot reach. despite the alerts mentioned, I am so happy with them because they bring peace of mind
G**R
Works and cost effective.
This little thing is amazing. I needed an AC guy to fix some issues and asked him about installing this. He took it from me and asked where I got it (Amazon) and how much. I told him less than $20. He asked to see the actual order and price. He then asked to take pictures of my order, intended set up. An hour later working on my problem he said I had saved customers hundreds of dollars. He was gonna order a case and give away to customers with an AC drain problem like I had. I actually felt smart and even my wife was impressed. He had been using a number non-smart alarm costing much more. Win all around.
J**Y
This really works!!!
Works almost too good! It’s very sensitive to water and very reliable. I use it for my sump pump and I always get an alert when the water is rising too high. It definitely has given me some peace of mind that I can be proactive before taking on any water damage.
J**N
Easy Install
It tested fine and I hope I never have to hear it actually work. I do feel it’s a good investment for under sinks and near laundry connections. Change batteries twice a year for peace of mind.
C**R
Horrible account integration. Fail & malware emails now
Horrible website trying to set up. Won't accept my sign up. Website gives you about 10 seconds to input a verification code yet you have to individually type each one by clicking numbers on screen. Stupid. Took many tries. Then everytime i created an account the website wiped out my information when I hit enter. Again this happened over and over. Frustrating and the site is bloated and instructions not written from a user perspective or English. I contacted customer service using an alias email. I am now getting malware emails to that e-address. I have contacted the company to share this information. I am so glad I did this because the email had information that this company used and somehow it ended up in phishing and malware emails to me from the one email I used to communicate with this companies customer service.
M**N
It seems to work well enough... but software is janky, and the battery door sucks
Id prob give this 3.5 star if I could. The Good: -It appears to do as advertised, it linked up with Alexa, and also Google Nest/Home. -It does indeed send alerts promptly if it detects water. -Uses AAA batteries, easy to replace. -Form factor/Aesthetics is/are nice, and water sensors are EVERYWHERE on it. -The probe is clutch for someone like me (buying it for a sub pump). Im surprised there aren't two separate models though. -Very Affordable ($20 for one, cheaper for more-- i got 1) -The sensors appear to be sensitive enough to capture real water situations, without being so sensitive that they alarm for minutes if theres a mist or whatever in their proximity (like, near a sub-pump water line)-- finally, we'll (probably) stop getting false alarms. The Bad: -The compartment where the battery lives.... is stupidly hard to open. The included tool basically bent and broke immediately on all three sides-- its just not up to the job. A flathead screwdriver does work, but may break the plastic clips. Note: I hate most plastic clips. Id actually suggest cutting back the clip near the wire if you have this same experience... it wont fit together AS nicely, but the friction fit is probably good enough, especially for those using the wire probe (like me). -The software it comes with is kind of janky, unintuitive, and immediately spams you with pop-ups. Bad form, likely symptomatic of a company with confusing messages/goals or leadership. -I did have to remove and readd it to Alexa to allow it to find the detector for routinues-- this could be an alexa problem though. -The siren isnt very loud (if that matters to you, it didnt for me). Neutral: -Some thought went into the software, and what happens if, say, the batteries die. I tested no batteries and it messaged me to tell me there was a leak. Thats.... better than nothing, for sure. The best would be a warning the battery is low, the next best would be a message that says the batteries are dead, the third best is a message that says the sensor has disconnected, the fourth would be what they did. At least there is some kind of flagging for that scenario. -Not being Matter or otherwise independent of their dumb app (no offense, I dont want the app). If this thing just connected immediately to the network we all want to use, it would immediately make this a 4.5 (then fix the door, and youre 5.0 for days).
M**I
Good and reliable
I recently got the water sensor with cable after checking other brands. Fortunately I didn’t have any leak. But when I tested it, I received a notification instantly via app, and email. So I definitely recommend their products. Setup was simple and easy and works well. I will be interested in adding more of their products to my home. For the price is a nice kit. Connects good with the WiFi and it’s a small device that fit almost anywhere. Also the cable as one sensor and the unit another one. So you can spread the detection
D**.
Great quality. Easy to install and well priced.
I'm using this sensor to monitor water level in my sump pump pit. The product was easy to install and connect to my wifi. So far so good...no issues or complaints and battery is still at 100% after 6 months of use. Great product for the price.
D**R
Pratique
Très pratique pour avoir des alertes en cas de fuite ou dépassement de niveau d'eau
N**O
Smart, Well Designed & Home Assistant Ready – Spot on from SwitchBot
I couldn’t be more impressed with this leak detector. The cabled version is fantastic value, effectively giving you three sensors in one. The engineering is smartly thought out — the top-mounted sensor sits in a dished recess, which cleverly allows drips to collect and trigger the alarm more quickly. It also has a built-in alarm for immediate local alerts, which is a lifesaver if you’re nearby. Connectivity is excellent: it works flawlessly with the SwitchBot app and cloud services, but it also integrates perfectly with Home Assistant via ESP32. In fact, setup with HA was even faster and more seamless than with the official app. Someone mentioned it didn’t work, personally didn’t have a single issue getting it to work. It was picked up by ESPHome instantly. I was torn between this and the Eufy option, but honestly this has far more bells and whistles, and the Home Assistant functionality is spot on — exactly what I needed for my setup. The build quality, design, and reliability are outstanding. I had the unfortunate experience of a copper pipe bursting (after rubbing against a rusty RSJ), which flooded two rooms in my office. I only wish I’d bought this device sooner — it would have saved me a lot of hassle. If you’re looking for a well-designed, highly reliable, and affordable leak detector, this is absolutely the one to get. ⭐ ⭐ ⭐ ⭐ ⭐
A**R
Muy útil, pero falta coneccion con tuya o aunque que el móvil suena a tope..
Aunque falta mejor señal para el móvil y falta coneccion con tuya o smart life, la cosa es muy muy útil, las sondas son muy sensibles y reaccionan a todo pero no empiezan hacer ruido sin razon cuando no hace falta... y no se conecta nincon ninguna app que se pone en la caja sino solo suya propia. Pero vuelvo a comprar
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