Zooz 800 Series Z-Wave Long Range Water Leak XS Sensor ZSE42 800LR for for smart Flood Prevention. Hub Required (Sold Separately). Compatible with SmartThings, Hubitat, and Z-Box Hub.

I'm not sure why some people are complaining about the sensor getting damaged if it gets wet. it's literally designed to detect water leaks, and it's cheap insurance compared to the cost of replacing flooring or drywall. If it gets wet and does its job, great, which is what I bought it for. Setup with Hubitat was straightforward, and it connected quickly to my Z-Wave network. It’s compact, discreet, and gives me peace of mind when I’m away from home for extended periods. I’d much rather get a notification from this little guy than come home to a surprise water damage situation. For the price, it’s absolutely worth it... especially if you want a few around the house in key areas like under sinks, near the water heater, or by the washer. Just don’t expect it to be indestructible; it’s a sensor, not a submarine. But it does its job well. Lastly, I called my homeowners insurance and they gave me a discount (albeit not much but any little bit helps).

Bought 15 & all were included successfully into Home Assistant and working fine after a few days. I like that these leak sensors touch the floor since I want to find leaks ASAP. Yes, the sensor might get damaged by water over about 1/8" deep, but I'll get notified way before the water gets that high. I'm fine with losing a $30 sensor to save hundreds or thousands. Some sensors I looked at won't sense water until the water is 1/8" or more. Too late in many cases. They have a very small footprint & easily hide behind toilets & under sinks. They seem to wakeup every 6-12 hours to update the battery status back to controller. So far, so good. If I have issues, I'll update this info.

The AeoTec is more reliable and has been running for 18 months on a single battery. The zooz 800 no longer works even after fresh battery and factory reset. The unit had never been in water except the wet finger test. Do not recommend this unit.

This little sensor is like the undercover detective of smart home gear—quiet, tiny, and extremely good at its job. The Zooz ZSE42 800LR caught a leak under my sink faster than I catch typos after I hit send. Setup was a breeze with my Z-Wave hub, and the long-range signal didn’t break a sweat reaching across the house. It just sits there patiently, waiting for a drop of drama—and when it happens, boom, instant alert. If you want peace of mind in a tiny, efficient package, this sensor is the way to go. Honestly, it works so well I’m tempted to hide one in the fridge just to catch suspicious drips.

The ZSE42 added easily to my ISY994 setup. It's a remarkably tiny thing, but my tests on a damp paper towel shows that it reacts very quickly to dampness and also signals dryness quickly. Like all these self-contained sensors, the ZSE42 is not designed to be flooded or immersed in water. I will be using it to trigger a whole-house water shutoff. The coin cell battery is said to last about a year. It reports its battery level and can send a signal when the level falls below a certain point, though I haven't yet figured out how to detect that. There is also a periodic "heartbeat" signal to indicate that it's still active.

These things are great. Super small and compact, and they react instantly and have never failed to alert me... But they have failed. If you don't get to the leak within a short period of time and they sit in water for too long, they are dead (or messed up). I guess the housing isn't water proof, which you'd think would be a pretty important feature on something like this. I have 10 of them around the house and they are a lifesaver, but I have had 3 of them die now after confirming a leak. If it happens in the middle of the night or while you're away, and you don't get to it to try it off, it will either completely stop working, or just go wonky and start triggering randomly and will need to be replaced. If they were waterproof, I'd say they were "cheap" and a heck of a deal. But they're "expensive" if they're a disposable item. Might have to switch back to the ones with an external probe for my next replacement (I'm shopping for one right now because I just went through this today).

It worked fine initially (with Indigodomo) but then stopped responding after roughly a year. New batteries didn't fix it. Not good, when water egress can mean disaster.

I just set two of these up yesterday. I have a Samsung hub with multiple devices, switches, outlets and water sensors connected. This was one of the easiest ones to set up. I have some older water sensors that periodically would go offline and had to be re-registered, so I'm hoping this one will maintain connectivity better. It was a breeze to set up with the QR code and my hub picked it right up. I did some initial testing with water, and it notified me as it should. The packaging was a nice touch, and everybody like that when they get a new toy. I currently have water sensors on two sump pumps, the water heater, the dishwasher and the laundry machine. If these work out well, I may very well replace my other water sensors with these. I'll follow up after trying this out for some time and have had the opportunity to verify if it resolves the issues I was having with my other water sensors in terms of connectivity.

Super easy to set up. Very sensitive! Added a second one in a area of my basement, and the next day we had a MAJOR storm. ~10" of rain in just a few short hours. 1000's of homes flooded. We had water enter, but these detectors triggered right away and gave us the time to contain the water and sustained little damage compared to our neighbors. Going to add some more I think.

J’ai galéré presque 2 heures pour faire fonctionner l’appareil (difficultés d’appairage avec ma box Domotique Homey, ensuite ne fonctionnait qu’à coté de la box…) jusqu’à ce que je change la pile qui avait été fournie avec: Avec une pile de marque, l’appareil s’est mis à fonctionner parfaitement et la connexion une fois l’appareil installé au sous-sol est bonne.