ZOOZ800 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.

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.

Couldn't even stay connected for 5 months to home assistant before randomly failing. I found out it randomly failed after my laundry room flooded with 2 inches of water. Trash product, Trash company. This is such a bad failure nothing customer service could ever do would make up for the cartoonish failure of this trash product.

This sensor has worked perfectly for me. I have found a work around for the criticism that water makes the unit die. I placed mine on a paper towel folded once in each direction so that the sensor is resting on 4 layers of the paper towel. The paper towel wicks water up to the bottom of the sensor allowing the leak to be detected without the the sensor being inundated and damaged. Mine is setup to alarm if for a small leak, but if used in a place with potentially large amount of water I'd place it on an absorbent sponge to accomplish the same thing.

These were really easy to include into HomeAssistant. In testing they responded really quickly, and it did a great job notifying me a year later when a hot water heater burst in the middle of the night! Highly recommend.

I purchased 3 of these because I didn't have enough Smartthings sensors.These worked fine most of the time. However, when one of them was soaked, it fail in a month.It's not waterproof! The bottom sits so low that an 1/8" of water will seep in to cause the damage.I've tried contacting them through their website TWICE. They promised to call me the next day. NO CALL BACK!These are expensive. I'm going back to the Aerotec Smartthings sensor. Their opening is higher up than these.

Our dishwasher leaked & caused damage to our floor & the ceiling in the unit below us, so adding a water sensor was an obvious necessity. The Zooz device was FAST & Simple to include to my SmartThings system. Testing was incredibly fast - I just placed the device on a wet paper towel and received an instantaneous notification on my phone (so did my son at his office!). Picking the unit up sent an instant notification that the sensor was dry. I'll be getting a few more of these!

When I bought it the description said it worked with Vera but now it says it doesn't work with older Vera hubs. I can tell you it did not work correctly with VeraPlus so don't bother if that's what you have.

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.