Smart Wireless Temperature / Humidity Sensor Wide Range (-22 to 158 degrees) for Freezer Fridge Monitoring Pet Cage/Tank Monitoring Smartphone Alerts, Works with Alexa IFTTT, 2 Pack - Hub Included

I bought this because we have a stand alone freezer in our basement. We had an instance where the door was somehow not closed all the way and we lost a lot of food. I had been searching for a device to alarm us if the temperature dropped in the future. Im an old guy and did have a couple of snags in initial setup, totally my inability toread directions. I attribute that to being a man! Thankfully the support I received from YoLink was the best support I have ever received for anything I have ever bought. Thanks to the guys at YoLink, I have an up and running unit connected to Alexa as well! Thank you!

The YoLink app is simple, easy to use, and very straight forward. Pairing new devices is easy, and the information is easy to read. The hub was also easy to connect with my Google Assistant. In general I would recommend the YoLink system to anyone setting up a smart home. HOWEVER... My primary focus when buying this base set which included the YoLink Hub, and 2 Temperature / Humidity Sensors was to have my Google Assistant (and IFTTT) read information from these sensors and preform automated actions. Much to my disappointment, these sensors are among the few YoLink devices that are NOT directly compatible with Google Assistant and Amazon Alexa. There is an alarm feature that CAN be linked with IFTTT, but it is extremely limited. Once again, The YoLink system itself is genuinely nice and easy to use / connect with other services. My only complaint is that SOME devices are not compatible with all features. While the sensors I have don’t do exactly what I needed, I am keeping them and the YoLink hub as I will use it for other sensors I plan to purchase in the future.

I have two of these. One placed in each of my deep freezers. They have been online for a year in a zero-degree environment without an issue. Yolink is unique in that they have a long-range and each sensor doesnt add another wifi radio to my house. Yolink also provides the ability to receive text messages as well as notifications through their app.

Took me less than 5 minutes to install three sensors and a hub - start to finish. I have two leak sensor and a temp-humidity sensor. Next, I am going to get the garage door sensors and controllers for my three car garage. Absolutely impressed by having zero software or hardware glitches compared to hours of headaches with prior home automation devices. Should cost a lot more for this quality of product!

You cant go wrong with these sensors. They are easy to program and have a long range. Tech support is great too.

I use one sensor in our fridge and the other in our beer fridge. They work beautifully and accurately. I simply check the app when I want to know how cold they are. I also set up alerts if they get above a certain temperature guaranteeing no spoiled food or warm beer. Its extremely easy to set up ythe app is user friendly. I highly recommend this product.

I like how easy it is to add devices. Battery lasts over 1 yr in the hot sun and col weather at 9500 elevation. I can access from my phone and all yolink product is very easy to use and run on the app. Connection time is very fast. I have to say this to all my product.

If this is the kind of device you are looking for to be able to remotely view temps and humidity this is the best one I have used so far. Even better than so called name brands. I dont get all kinds of false alarms. The interface is easy to use but not stripped down to bare minimums. Most importantly, it just works, worked easily practically out of the box. No drama, no fees. Its great.

I have tried them all. This actually works. The temperature displayed on most freezer or fridges is not the actual temperature inside. This will fix that problem. And if someone leaves the freezer door open in a hot garage….this will let you know before it all goes bad. Truly a great investment. I needed you years ago!

Update; changed my rating to 4 stars for two reasons : First, and most importantly, was the level of customer service received after posting the original review. This company stands behind their products and is willing to make it right if something is wrong. Second, I was able to get the hub to stay online by whitelisting the wifi. Still cant get the ethernet to stay online which only 4 stars, but this might be due to my hardware firewall, still working on it. Overall, good products, GREAT company, I can now recommend them. Worthless ecosystem, Id give zero stars if possible. Hub will not stay online, either wifi or ethernet. When the hub drops, all the sensors start going offline and I start getting water leak alerts, power failure alerts, etc. Save your money and buy something else.