3 Pack Smart Water Leak Sensor, 1/4 Mile Range, Alexa & IFTTT Compatible, App Notifications - Hub Required (YS7903-UCx3)

Works well once reset to Europe wifi but it would not connect with their European/UK hub without a fair amount of resetting and liaison with tech support. I was expecting this so was not a problem for me.

The hub and temperature sensors work well and are connected immediately. I purchased the 3-pack water leak sensors but did not realise the difference between UC and EC on the labels. UC does not work in the UK; you need to buy EC. I contacted tech support, but after an initial hello, I have been ghosted!

If you are running the YoLink system, buying more sensors is not a maybe it is a must. I picked up this 3 pack to cover the rest of the house and it was a no brainer. Setup took minutes, they synced right up, and now every risk area is covered. Under sinks, water heater, laundry, you name it. These things catch leaks fast and alert you within seconds through the app. Pair that with the automatic shut off and you are basically shutting down problems before they turn into expensive lessons. The range is legit too. No signal issues, no drop offs, just solid performance. At this point, if water gets loose in my house, it is going to have a bad day not me. Bottom line, if you already have the system, do not cut corners. Get the sensors and cover everything.

These leak sensors are small and easily placed where you want to monitor for water leaks, such as under a sink, behind a toilet (see photo), next to a water heater or clothes washer. With a hub to connect them to the internet, they can send notifications when a leak is detected, which is useful all by itself, but the best part is that they can also communicate with other YoLink components to automatically close the main water valve, greatly reducing the risk of damage. I started with a kit that included a valve operator and controller, a hub, and three leak sensors, but I wanted more leak sensors, and this multi-pack was the most economical way to buy them.

I have these in all water critical areas of my home. Easy to setup with the app. I have had a couple of very minor leaks that would have gone undetected for some time if it were not for these sensors. Sensor detected water right away and app alerted me. Was easy to address the water issue when it is small and just starting.

I recently switched carriers for my homeowners insurance. The new carrier performed a home inspection and noted that "water" is the leading cause of damage in the U.S. (not electricity or fires). The underwriter concluded that I should install some type of leak detector device(s). So, I found the YoLink Water Leak Sensor system and the underwriter approved that solution for my home. I purchased extra sensors so that every risk point (e.g. toilet, sink, dishwasher, etc.) would be monitored for presence of water. I tested each sensor as I placed them and each and every one worked without fail. This product is easy to configure and install and thus far, after three months, has been very reliable.

I bought this 3-pack to place under my kitchen sink, refrigerator, and water heater. Setup was incredibly easy—the hub (sold separately/included) connected quickly, and the sensors paired in seconds. I tested one with a damp paper towel, and the notification on my phone was almost instant. The LoRa technology really does seem to have a much better range than my old Wi-Fi sensors; I have one in the far corner of the garage and it never loses connection. Highly recommend for anyone looking to prevent expensive water damage.