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

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.

Our power goes off quite often, this system works really well to notify me of a power outage, or a rise in the temp if someone left the freezer door ajar. Twice now since I got this system, our power has gone out and my app notified me almost immediately! I’ve had this system for about three months now, besides the two therms the pkg comes with, I added one more so each freezer & the fridge are covered. So far, I’m impressed!

Reliable connection and monitoring system

Using to monitor temperatures in Kitchen and Garage freezers. Also purchased YoLink Water Sensor 2 and that is working as expected. The hub and sensors have a nice look and feel. Tested high and low temperature alerts and can say they are working well so far. The YoLink app on the iPhone looks clean and works well for me. Dropped a star because setting up the hub to my WiFi network was a challenge. The hub only supports 2.4Ghz WiFi and apparently the iPhone must also be on 2.4GHz WiFi in order to set up the hub to work on a secure home WiFi network. The iPhone kept connecting to 5GHz by default and could not complete the hub setup step. Since 5GHz signals have a shorter range than 2.4GHz, I solved it by taking hub and phone to far end of house where I had a weak WiFi signal. Was then able to setup the hub to our WiFi.

Bought this Fall 2022. Able to track indoor and outdoor temps in our house with our cell phones at home, out working and shopping, and away on vacations. Keeping us informed about our home heating situation and telling us what the outdoor temp is without another outdoor thermometer. The best most affordable choice on the market for homeowners. The outdoor sensor should be placed in constant shade on a north side not close to any heat source like a window or vent or an uninsulated wall. The WIFI for reception for all devices is good. Our base unit is in a basement home office. A sensor is in a less heated basement near the water service. Another sensor is in our master bedroom. This gives us our outdoor, basement and upstairs conditions that together give us a full understanding of our indoor/outdoor freeze potential. On vacation last winter, we realized from this YoLink system that our thermostat set backs to reduce our house heating was not working as expected. We called our daughter who came over the house and corrected our thermostats to the settings we wanted. We probably saved the cost of this equipment by substantially reducing our heating energy that one time.

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!

We have a refrigerator out in our uninsulated garage. I wanted to monitor the temperature for 2 reasons. ONE, during the winter I want to ensure temperatures are maintained. TWO, this is an old fridge, so I want to be alerted if it stops working altogether. I love that these monitors collect a history so that I can easily keep an eye on things. I found the setup to be very easy and quick. I connected directly to wifi using my Eero system. I love that there will be alerts sent directly to my phone so that I can take action ASAP. I just installed this today and I will absolutely update my review if anything changes.

We are currently using in a k-12 school system to monitor all our coolers and Freezers. Easy installment. App is easy to use. 24 hour monitoring with text, app alerts and email alerts. Economical! Highly recommend! Have not needed text support yet.

In AZ, barely open garage freezers can become very costly. We have had to refill our entire vertical storage freezer twice this year and with 2 cooks in the house, theres lots of opportunity for mishaps. This has been a welcome solution. Pros - Peace of mind. - Once setup, has worked reliably without hassle. - Has already paid for itself several times over in saved food. - Clean app interface (although some unnecessary backtracking involved). - Alerts trigger quickly and loudly on connected devices. Cons - Mobile apps only, no desktop application. - More customization would be desirable. Notes - My observations are all made using Mac devices (iPads, iPhone, Macbook) - This is not a quick setup, should allow at least 1.5hr for setup, testing and customization. - Recommend do not try to setup wirelessly, plug hub into router during setup process. - Installed on my own, but they offer assistance if needed. - I keep the alert range set @ -10F -- +18F to allow for freezers to be loaded/unloaded without alerts (temps can be adjusted to 1/10 of a degree). - May be a good low cost alternative for small business owners. Overall, very happy with this system, the 2 sensors are monitoring 2 freezers in our garage and I will be ordering more sensors soon for indoor fridge and perhaps for terrariums/vivariums.

My fridge/freezer starting showing signs of failure so I bought this Yolink device to monitor them and get notified of issues. IT JUST WORKS! Simple to configure, works reliably, and does exactly what it’s designed to do. I especially like the flexibility in alarm settings and also alert settings. I would absolutely recommend this product to anyone. It’s worth every penny!