We use this to monitor temp in a garage refrigerator which is required to be on a GFCI. If the temp gets above 10° in the freezer, the app creates a notification on the admin’s phone, sends an email and text alert to helpful people nearby so that the problem can be corrected. Device and hub were easy to setup. I wish that it had HomeKit integration, but even without it I’m considering adding other devices to this hub.

These things are super easy to set up and then you just use them. Honestly - the setup process is 1) download the phone app, 2) unbox the device, 3) read the QR code with your phone, 4) answer a couple of setup questions on your phone. And then it's working. I have two in my metal barn located about 500' from the house and have had no communications issues at all. Next up, the vibration sensor for my mailbox!

I use several yolink temp sensors & they work great. They are really easy to set up& are fairy dependable. Hub always resets automatically if you loose power or internet. Battery life is pretty good too. I have sensors in freezer in separate room on other end of house from the hub & they work great.

The YoLink temperature humidity sensor, which requires their inexpensive YoSmart hub, returns accurate temperature and humidity readings which is the starting point for any home integration system (through IFTTT, in my case). It is easy, almost trivial, to set up (within minutes of opening the package). This at a price much lower than competitive systems. These guys know what they are doing. I use their sensor as a trigger in an IFTTT applet that turns my ceiling fans on and off depending on temperature and humidity. Works great; the ONLY issue is that their server response time is a bit slow so that system does not trigger immediately. They are aware of this and, based upon their previous response to my suggestions, I expect that will be fixed very soon. Their service is outstanding; they not only answered my calls and email but also updated their app based upon my suggested improvements. And that update happened within days of my suggestions! Very highly recommended.

I purchased this for my Solar Room so that I can monitor the temperature. Worked well, so I added another one for the shop. After installed, I can monitor the temperature from anywhere anytime.

I was cautious to order because there were not many reviews, but I am SO glad that I did. I cannot recommend the yolink products highly enough. They are incredibly easy to setup, and work flawlessly. Setup: The only issue I had during setup was the wifi did not want to connect. I connected the hub via ethernet to the router and it connected without issue. Once it was connected, I simply disconnected from the ethernet and moved it to the location I wanted the hub and it stayed connected to the wifi. Range: They aren't kidding about the range on these products! Our chicken coop is over 400ft from our house, across hills/trees/brush and I have had zero issues with connection. Customer Service: I emailed customer service with a question and received an answer within the same day. Very quick, polite, and helpful. IFTTT Integration is very easy to use and works well, though I have found that I prefer the in-app automation since it there is no delay. I am using the yolink wifi plug to turn on/off a heat lamp for new chicks in the brooder based on an alert from the yolink temp/humidity sensor. If the temp gets too high, the plug turns the lamp off - if the temp gets too low, the plug turns the lamp on. It's working very well. I have had zero issues with the app and have found that it has all the functionality that I need.

I was about to order another company's temperature and humidity sensor when the Yolink smart temperature and humidity sensor popped up on my Amazon screen. I'm glad it did. Not only is this Yolink product much lower priced, it's superior to the others. It sets up very easily through the Yolink app on your smartphone via the Yolink hub which needs to be purchased separately. It has given me peace of mind now that I can check on my basement's humidity level from anywhere. You can set alerts to email or text if either the temperature or humidity falls below or above your acceptable range. Another nice feature is that the sensor itself has LCD temperature and humidity readings so you can see it without your smartphone. Obvious how this is handy but surprising how so many others (including the more expensive one I was about to buy) don't have it.

Constantly exceeding my expectations. I own a lot of Yolink hardware and am deep into Home Automation with Home Assistant. All work seamlessly. After using a lot of the devices for a long time, I had one failure. The App on my phone let me know there was an issue. Therefore, the system (includes all of the components) are monitored for health. A rare and complete level of Systems Engineering. On the one failure, I emailed Yolink with the results of the very simple and straight forward troubleshooting. Boom. They were sending me a replacement in minutes. Absolutely outstanding. I have not seen a company at this level in a while. It brings tears of joy to my eyes to find a company like this one. I can only hope that other companies take notes and follow this outstanding example.

The product description states that the device is compatible with Alexa. It shows up in Alexa as a device and will display the temperature (not the humidity), but the device will not show up if you want to include it in a routine. I purchased this for a freezer to add an alarm if the temperature rises, not possible with Alexa because the device does not show up. Absolute BS!!

These are not 100% accurate, +/-1* roughly but for a quick look into the kids room or around the house they are great, I even use them to adjust my temperature at night so we are not to hot or cold