Water Leak Sensor, Zigbee Wireless Water Leak Detector for Alarm System and Smart Home Automation, Requires AQARA HUB, App Notifications, for Kitchen, Bathroom, Basement, Works with IFTTT

I’m really impressed with this Aqara Water Leak Sensor 3 Pack. Setup was quick and seamless using the Aqara Hub, and the Zigbee connection has been rock-solid ever since. The sensors are compact and easy to place—perfect for under sinks, near appliances, or in the basement. I tested them with a small amount of water, and they instantly triggered an alert through the app. Notifications come in fast, which gives great peace of mind. I also love that it works with IFTTT, so you can integrate it into your broader smart home setup. This is a great investment for anyone looking to prevent water damage and stay ahead of potential leaks. Highly recommend!

Easy to set up and so far working well. I have a well pump and along with the leak detectors am able to easily turn off water in event of a leak

So far works good and the battery life is fine. My only minor issue is it tends to go off line for periods but it seems to be the Aqara hub itself rather than an issue with the sensor itself.

Greate small sensor that you can put under the sink, washer or dishwasher in case there is a leak. I love those, small and work great.

Update - 11-29-2023: Added temperature sensor info below and attached image. Original Review: Bought these since they were on sale and wanted something to integrate to Home Assistant. Wasn't super on board with the idea of a "coin" style water detector (would prefer the cable type), but went with this to give it a shot. I put it next to the drain and water heater downstairs. Fast forward three months. We had a small backup in our drain downstairs and the alarm in Home Assistant went off. Saved me a lot of damage I'm sure. You will 100% want to make sure you set up multiple critical notifications in your automation and consider choosing a custom obnoxious sound. If you're sleeping, you want to make sure you don't sleep through it. The Good: -- Paid for itself already -- Integrated very nicely with my Sonoff receiver in Home Assistant. -- Fairly non-descript and small. Hard to notice on the floor. -- Fast. This thing went off immediately when water had reached it. -- Inexpensive! I'll be honest, I really wish there was a cable type Zigbee detector that wasn't $100. But this thing is just so darn inexpensive that you can get six of these for the cost of one of those plus an extension cable. The Cromulent: -- It's battery-powered. As mentioned above, I the cable type is preferred, but I'm guessing there's zero chance of a cable type without having to be plugged into an outlet. Plus you can put these wherever you need without having to worry about an outlet. -- TBD on battery life so far. I've been tracking this since I installed it in mid-July. Started at 88% with the factory-supplied battery (constant problem with Aqara) and within ten days it had dropped to 70%. It has been sitting there at 70% for three months now. I'll update this when I have to change batteries. -- The LQI shows a fairly weak connection, which is surprising given that it's only 10-15 feet away through two interior walls. Kind of surprising given that other devices that are much further away are significantly better. The Bad: -- The temperature sensors in these are utter garbage. They're the internal temperature of the device, not the room they're in. They're off by 10+ degF and should NOT be relied upon in any capacity. Overall: There really are no major primary weaknesses to this device. I'll be grabbing a couple more when they go on sale to scatter around the house. I'd like to get the Eve Water Guard but at $100 + $20/6 ft, it's really hard to justify it. The temperature sensors are useless cost adders and Aqara would be better off just removing them.

I am using 3 of these with an Aqara M3 Hub. The M3 (which I would highly recommend) has a built in speaker for alarms. Adding the leak sensor to the Hub was easy and took only seconds. The Aqara phone app offered to automatically create an alarm for them. I tested them by wetting my hand and pressing them into my hand, they each immediately notified of a leak via the M3 Hub's audio alarm. They have two exposed metal screws on the back whihc sense water using an electrical signal between the screws. I beieve they would signal a leak if you had aproximately 1 mm of water, so not much. They do need to be placed flat on the surface you want to monitor. I put them in some corners of my basement where water has got in previously. I used these under Home Assitant as well (they work great with Zigbee2MQTT), but decided I liked the Aqara ecosystem features better. Either method of control works well, depending on your preference. Note that you compress the dome of the sensor to push the pairing "button". And a blue LED will blink through the dome. It's not totally obvious to do this.

Starting with the good: As a leak detection sensor it did the job well. I tested it in a simulated leak and worked beautifully within a second from contacting water. Pairing with the hub and with HomeKit was a breeze. Once connected, the connection was very stable and didn’t have any “no response” flags. The range is also pretty good. In a 4000 sq ft house, I was able to place the hub in one end and the sensor all the way on the other side without any issues. Now why do I not recommend it? I placed the sensor in the attic under a recently repaired roof spot to get alerts if it leaks again. When it rained heavy, my roof repair did not hold up and some water found it’s way inside the attic. The Aqara sensor did what it’s supposed to do and detected the leak - five stars so far! - . However, a few minutes later it stopped responding. I went up there to check and didn’t see anything on the outside. I then wiped it clean and opened the battery compartment and looks like the water leaked everywhere inside the sensor and fried the board and battery. Upon more inspection it looks like the point of entry was due to a nicked O-ring that was supposed to prevent water from getting inside the sensor as shown in attached picture. This usually happens with poor manufacturing QC. I would have otherwise given this sensor 5 stars but with such poor manufacturing tolerance and quality control it makes the sensor potentially a one-time use and not worth spending >$20 on. I have 3 other sensors that have not detected any leaks yet. It remains to be seen how many of them could have the same o-ring issue and will die after one leak. Will update with more info later.

I integrated this into our Homekit setup, using an Aqara M3 hub as a bridge to Homekit. As other reviews state, you do have to push quite firmly at the center of the sensors to get them in pairing mode. Sensors show up in my iphone home app. We did have a slow leak event under one of our sinks, and it sent an alert to my phone immediately, helping to prevent further water damage. I did place the sensors within a plate or on top of a paper towel, so that it might be more sensitive to picking up slow leaks.