THIRDREALITYZigbee Water Leak Sensor,120 dB Alarm,App Notifications Enabled When Work with Home Assistant and Compatible Zigbee HUB Like SmartThings, Aeotec or Third Reality Hub,Batteries Included

The Thirdreality sensor case has a distinct form factor, but in a house with a number of other small sensors of various types, that could be a good thing. Good build quality, and reliable operation so far.Stuff I've liked:It had the best range for pairing and operating of the ones that I've tried. It had a loud, on-board alarm. The version with the drip leak function can optionally detect very small amounts of water, depending upon physical configuration. It has paired easily and worked well with my Hubitat system. It uses common AAA batteries.Possible issues:Where an audible alarm is not wanted, another brand/model sensor would be needed.The case is much thicker than others in its class, and may not fit beneath a refrigerator or other device.The first unit I received used slot-head screws. A very small screwdriver was included in the box, a really thoughtful touch. But, a jeweler's kit, like many folks use to tighten eyeglass screws, would be much easier. The sensors in a subsequent order had screws that could be worked with either a Phillips or straight-bladed driver.Where a low-profile case, or a sensor with a remote head, is not needed, this is my choice so far for an inexpensive Zigbee unit.Background:Most homes have many potential sources of leaks - water heater, dish washer, clothes washer, refrigerator, bathroom plumbing, etc. - that could cause expensive damage. I decided to buy and try five different, inexpensive, Zigbee leak detectors that might work directly with my Hubitat home automation hub. They were by iAlarm, Neo, Thirdreality, and Treatlife, and a generic "Water Leak Detector Zigbee" was added to the mix. At the time of my purchase (August, 2023), each was slightly less than $20.All worked properly with my system using the Hubitat "Generic Zigbee Moisture Sensor" driver. All but the Thirdreality also worked with the custom "Tuya NEO Coolcam Zigbee Water Leak Sensor" driver, which adds an explicit state indication of online or offline. But, both drivers support current wet/dry status and battery % reporting. A tip would be to install the custom driver first, if desired, then let Hubitat choose it during device pairing. Also, each of these should be paired within a couple of feet of the hub, then moved to the desired location.Some thoughts about the group:Overall build quality of the group seemed quite good, with the exception of the generic "Water Leak Detector Zigbee", which was only mediocre.The Thirdreality and Treatlife devices have onboard alarms, and could be used as stand-alone detectors, although there appear to be several detectors available that are only stand-alone, and less expensive than the Zigbee devices. The Thirdreality alarm is much louder than the Treatlife's.The Thirdreality unit had a longer range than the others, both in pairing and in operation. It and the Treatlife both use common AAA batteries, but I haven't used these sensors long enough to be able to compare battery life.The Neo device was the only one with a "remote" sensor - limited to the length of the attaching cord, but still may be needed functionality. However, the cord actually plugs into the wall mount, not the unit itself, so the mount must be used when remote sensing.

Easily hooked up to the Habitat hub. The device size is small enough but not the smallest leak sensor. Only issues I see is that the sensor plates sit too high on the floor, about quarter inch.I purchased the extra sensitive plates with the leak sensor. They are metal and connect under the screws on they bottom of the device. The water is sensed from the front screw to either back screw. That distance is several inches apart and a quarter inch off the ground.Without the plates it would detect water when it was in a flood and the water level reached a quarter inch high. I feel that is a little late. Would rather know there is a leak at first sign of any water.The add on plates do better but they still sit about the thickness of a quarter from the floor. Better than without.I have other water leak sensors with two metal contacts about half inch apart and sit right on the floor. Much better to detect a leak before it gets out of hand.On this sensor, you could add two wires to the screws on the bottom and put them on the ground near each other for better sensitivity. The connections are sensitive enough to go off just touching with my dry fingers. Didn't need water. That's good news.I used this device for a a sump pump water alert. I purchased a small sump pump float switch that attached to the side of the sump pump PVC pipe. It had two wires which I hooked to the two sensor screws. When the small float goes up the alert goes out. This device works really well for that. I could have used a contact sensor in my case but this sensor was cheaper and it has the extra function to detect water. Although water at a depth high enough to trigger the alarm would be at the point the water level filled the room and started to rise.The sensor also has a sound alarm beep, like a smoke detector. And it sends a signal too to my phone, thru the Habitat hub.Devices uses two AAA batteries. Need to unscrew the small screws to put in batteries. Kind of a pain but hopefully do not need to do that often. Looks like the Hubitat provides the battery life in percent. I should know when the battery is getting low without taking the device apart.Overall, recommend with modification to extend the sensors. The access to the sensor wires, thru the screws, make it easy.

I bought two of these sensors to monitor any leaks from my clothes washing machine and hot water heater. They came with a set of AAA batteries and a tiny screwdriver (see picture). The quality of the sensors appears good. The sensor is tripped to "wet" if two of the small screws at the bottom of the sensor are shorted out (as when they are in water). The sensor will make a high pitch sound when it is tripped. I've also got it paired via Zigbee with my Hubitat hub and it works great.

Although it's bigger than the ST water sensors, it's a breeze to connect, reasonably priced and reliable! And, once again uses standard not specialty batteries!

These take an extra couple minutes to pair but they work very well. I like that they use AAA batteries and that they have a local alarm.There are two problems with these devices.1) HA sees an extra entity after pairing. In addition to moisture detected, they also show an invalid entity called "Opened", which never changes state. This is even though these are part of the "Works with Home Assistant" list. This does not affect the use of the device for the intended purpose.2) Three out of twelve sensors report low battery status, even after replacing the batteries twice with fresh new ones. Two read 43% and one reads 63% with brand new and tested batteries. This makes it very hard to rely upon the reported battery status or use it in any automation routines.

These things are amazing for the price. I bought three of them, they all paired with my Conbee II/Home Assistant/Zigbee2mqtt setup without any problems. As others have noted, the screws are the bridge point that triggers the sensor. So if they are fully screwed in tightly, that's a few millimeters of water before it would trigger. But at the suggestion of other reviewers, I left my screws partially unscrewed. It's now only about 0.75mm - 1mm that water would need to pool before triggering the sensor. The casing still stays on totally fine this way; it has a pretty decent friction fit.The alarm triggers immediately when the contacts are bridged. There are three contacts; two at the bottom of the teardrop shape and one at the top. One of the bottom contacts has to bridge with the top contact to trigger the sensor. It will not trigger if the bottom two contact points are bridged.The alarm is loud enough (though honestly we won't hear it from our store room where our water well pump is). It's loud enough to hear if you're within about 35 feet of it. Otherwise, I'm counting on my Home Assistant's push and voice notifications to let us know about the problem. Since the sensor status in HA changes in less than a second from the time the sensor is triggered, the lack of volume should be an easy thing to compensate for. At $20 CAD each, with next-day Prime delivery, this is starting to compete with Ali Express prices. I suspect we'll buy a few more of these.

Connected to smartthings hub in no time. Displays wet/dry state and battery life. Zigbee uses low power consumption so the AAA batteries should last for a good while.I have the water drops sensitive version, does not take much to trigger the beeping sound and smartthings notifications. Exactly what I needed next to my dishwasher, washing machine and water tank.

In its standard form, the contact sensors are recessed into the bottom of the unit. That means there needs to be a lot of water before it will detect any, which means the damage is already done.I bought a thin sheet of aluminum (has high conductivity) that is 1/8" thick. I cut 1 1/2" strips that are the width of the the channels on the bottom and drilled a small hole at the end of each to allow me to use the screws to hold them on.Bending them slightly at the end created 3 little "feet" that will detect water much faster.Only gripe is that the front sensor needs to be one of the two required to trigger the alarm. The back 2 sensors together won't trigger without the front one also getting wet.It paired with Hubitat easily and shows battery status.

Very easy pairing on zigby to my router, tested working well.Bought due to a flood under sink.Hope never to need it👌

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