Centralite Micro Door Sensor (Works with SmartThings, Wink, Vera, and ZigBee platforms)

Follow instructions and should be trouble free install. Do cover all exposed wire if not fixed in place

I was a bit all over one this one... The first one I got was off by 2F when I first installed it. I understood this wasn't a big deal just a bit of error. After a day that gap increased to 3-4F seeing some other reviews this worried me about the longevity of the device, so I asked Amazon for a replacement. I installed the replacement and it was within 1-2F of other thermometers I have nearby. After 24 hours, I noticed that the gap was really 1.4F, so I used the temp calibration option in the settings. I have been keeping an eye on it for about a week and it seems to be correctly doing what a thermostat is made to do. I am planning on buying a few more in the near future!The wire terminals for the thermostat are really weird. I haven't seen this style before, so I didn't realize that you have to pull the tab and insert the wire at an angle to get it to lock in place. I much prefer other designs.Some notes about home assistant:First of all... it works great with home assistant. It was picked up as soon as it turned on, and home assistant created a card with the basic functionality. I also love the ability to see a chart of the temp changes with what action the thermostat is doing. It should be trivial to calculate the heatloss of the home with this information.Thermostats require different thinking than plugs and light bulbs. A thermostat is an external device that does its own thing. You put it into a state (cool/heat) and give it a desired temp and the thermostat does the rest. I was thinking I would tell it "run cool for 5 minutes", but to do that you would have to say "set the target temp 2F lower than the current" I also wanted to tell it to turn on the fan only for say 10 minutes if it is cooler outside instead of using the AC unit. To turn on the fan only mode from home assistant apparently you have to call a service to set the HVAC mode to "fan_only" this has to be done in yaml editor not from the web gui. I was able to get the fans only to run, but I couldn't get it back into the cool state, so I manually pushed the mode to cool from the device itself.There is a little delay to get the thermostat with a change, so don't expect immediate response. It seems to take 1-3 seconds, so not bad but if you are trying a few things at one time have to give it some time.Sometime the thermostat won't update for some time. Watching the home assistant website I have seen where the device hasn't sent an update for 1 hour. I even walked over to the thermostat to read the temp it shows. Every time I have done this, I noticed the temp is the same as the room. My conclusion is that the temperature hasn't changed enough to warrant sending an update to home assistant. This seems to be normal activity for temp sensors with zigbee.Overall, I have never paid so much attention to thermostats. Having it patched into home assistant made me realize how little I understood how they work. For example, I can see the swing temp in action... the house's temp gets 1.2F above the target it will turn on the AC to lower it to 1.2F below the target. In home assistant I can see it cycling around this temp...it's really cool.

Unverschämt kurze Akku Laufzeit bei Verhältnismäßig teuren Batterien!

Buy this if all of the following are true: - You have a ZigBee-capable hub (SmartThings/etc) or ZigBee USB Stick/home automation software (Home Assistant/etc ... mine worked out of the box with the Nortek GoControl Z-Wave/ZigBee USB stick (firmware updated ZigBee) and Home Assistant) - You don't care about the thermostat, itself, having features beyond "set temperature/humidity/heating/cooling" with compatible heating system(s) - You do or don't have that "Common" wire that only newer installations have (it's not needed, though others have complained about batteries not lasting terribly long).This was the least expensive "smart" thermostat available on the site when I purchased it a couple of days ago. I have no interest in a Nest/EcoBee, I've got my own setup and they're over budget for me.I also leaned toward Z-Wave/ZigBee instead of WiFi since the wifi units in my budget appeared to have similar problems to other lower-end IoT devices, but the cost of Z-Wave/ZigBee thermostats are quite high despite them generally being not very interesting. On the WiFi side, there's plenty, but they're all more than this, all use cloud services so I have to worry about the provider quitting/failing and me losing remote control of my thermostat (minor, yes, but I paid for it). Then there's this one... no cloud, ZigBee, inexpensive, looks better than every other one within $40 of its price tag.Setup was *simple* -- pairing with ZigBee was simple, I just set the device to "add" mode, plugged the thing in and it showed up. Mark the wires, take the old one off, put the new wires where the old ones were, screw it into the wall/pair and done.Two extra points for getting a couple of things right that the cheaper models don't: - It looks nicer than the pictures. In fact, it looks "expensive" (certainly more expensive than it was). The front panel doesn't feel like cheap trash like most thermostats; it falls way short of the sleekness of an EcoBee/Nest, but the thermostat isn't meant to be a conversation piece. - They either nailed the temperature, or I got lucky. This is within a few tenths of my most accurate ambient temperature sensors. Knowing that most thermostats have pretty terrible sensors in them, I planned on triggering the heating/cooling based on other, more accurate, sensors in my home.Bonus: The temperature being reported by the unit is better than the higher-end one I replaced it with. It's a few tenths off, southward, at least at the current temperature. Since my other was two whole degrees (Fahrenheit) off, that's an improvement, but it's also moot since I'll be triggering the thing based on readings from multiple, very accurate, sensors. If it's this accurate all around, I'll probably include it in the values - The super-short manual was readable, but unnecessary. It's a simple installation.

Edit 11/13/18The first one I bought walked off. I think my nephew picked it up and placed it somewhere. Oh well. It wasn't working at the time because it loves to disconnect from the Wink 2 hub whenever it feels like it. So I bought another and had trouble pairing it (about an hour). Finally it paired and now this water sensor disconnects at random. No reason. I put a new battery in it for good measure. It ran for a few days the disconnected again. I'm going to scrap this sensor and try another brand. Good luck.I used this sensor in my basement by the main drain for the HVAC, water conditioning, water softener, water heater area. If anything in that room starts to leak it will go to the main drain in that area. I placed it nearby the drain. We have a well and it has a Goulds Aquavar pump controller. The pump controller has a jumper wire for enabling the pump to run. If the jumper wire is not there, the pump does not run.So I paired this leak sensor with the Wink 2 hub (easy). Then I paired a z-wave relay switch with the Wink 2. Then I created a robot in the Wink 2 so that if this water sensor detects water it will then tell the relay to break contact. Breaking contact in the relay then shuts down the well controller and, in turn, the well. The robot also sends me a notification that the well has been shut down.The setup works flawlessly. I have had no problems with the Centralite Water sensor at all. It's also nice because it tells you the temperature. It would be easy to setup another Wink 2 robot to shut down the well pump if the temperature dropped to a certain degree. I have another robot for my Honeywell thermostat that does this, so I didn't do it with this sensor.I plan on purchasing more for other possible wet locations upstairs by the kitchen sink/dishwasher area and by the washer and dryer area. It's easy to justify the cost of these sensors and a Wink 2 hub when you figure out what the repairs would cost from a water leak going undetected for hours or days on end.