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

After losing an entire freezer of meat, I wish I bought it before. I can see Temps any time and get an alert if it gets warm.

Following a service call from on my 9 month old LG refrigerator to correct a sensor problem causing the food in the freezer to thaw I decided I needed a WIFI sensor. I wanted a device that would monitor the temperature and notify me when the temperature rose above my setting in the freezer and refrigerator. After reading the reviews on the various products available on Amazon, I decided to give the YouLink Wireless Temperature / Humidity Sensor a try. After installing the YoLink Android APP and creating a YoLink account, I was able to add the HUB, and the two sensors by scanning the QR Code on the back of each device. I plugged in and connected the hub via the provided Ethernet cable (WIFI connectivity is also available). The hub status changed to online in the APP. I pressed the SET button on each sensor and its APP screen status changed to online. Each sensor immediately began displaying the temperature and humidity matching the information display on the sensors. I placed each sensor in the refrigerator and freezer sections verifying their accuracy with a separate temperature sensor. The Alert setting for high/low temperature and humidity were easy to setup with the APP. I find that the Alert notifications are almost immediate. The documentation provided with the hub and sensors is very basic, easy to following and gets the setup done quickly. I received links from YoLink on the additional more advanced setup options via email. I called the tech support number with some questions on Saturday and was able to speak to a knowledgeable tech support person. So far, I am impressed with the YoLink Wireless Temperature / Humidity Sensor and highly recommend it.

Pretty much a a snap to set up (unusually so). Also connected to Alexia no problem. Only complaint... I really like freezing tha batteries & electronics... I do wish they would put a probe on these so we could leave the transmitter/eletronics out of the freezer.

Out of the box this had batteries installed on the remote sensors which was nice. I plugged in the hub via ethernet into the home router. I have one unit in a fridge and there are no signal issues reaching the sensor as well as the freezer in the garage. Range appears good....signal strength in fridge which is upstairs is still -77dBm). The signal strength for the other sensor directly upstairs from router is -52 dBm). No issues or concerns having these dispursed either in something or further away from the house router. Functionality is also easy to set up alerts or see charts with the data. knocked one star off for lack of ability to enable a push for an updated temp from the sensor. The booklet has the requirements for for a refresh based on one of 6 conditions...otherwise its 1 time per hour. I would prefer a SW update that enables a manual refresh.

The 4 temperature sensors I installed appear to be accurate and produce a wealth of data via extended range bluetooth. This hooks up to yolink hub which in turn is easily linked to Alexa. The instructions are a bit skimpy but the telephone support was outstanding. Hopefully no longer returning from vacation to find my frig full of mold consequent to.a thermostat failure. The app supports sending an email and/or an sms when the high low temp limits I set are exceeded. It shows a graph of temp.and humidity daily/weekly/monthly. I just installed this system today, the day of delivery. No idea about longevity etc. Ill update review as appropriate. Im hopefull.

I use these in my garage fridge/freezer. We have a stand-alone garage, in SoCal. So it gets HOT in the summer. It is also on a separate circuit from our home, so if/when the circuit randomly blows, we have no way of knowing unless we go in the garage and try to turn on the lights. That makes this thing super useful. Of course, when we go out of town, now well also know if theres a broader power outage and our food is all gone bad. It was a cinch to set up, and the app is very functional. I love that I can set a temperature range. It helped me a) make sure we had the fridge and freezer set to good settings for the temperature we wanted and b) establishes an alarm so we know if something has gone wrong and the power is out in the garage.