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

Got two temperature/humidity sensors for a second home to alert us if Temp gets too low. Easy to set up. Batteries last a very long time. Smart phone alert system notifies me if Temp is too low. Product support is great. Works over long distances. I use this system in two locations in two different states, both operating through the same app, no problem. A+ rating!

Easy to install. Alert works.

First off I have another system I bought on Amazon that has no communicating Hub between the sensors like Yo-link does! What that means Is much longer range that I needed to reach my outdoor enclosed well pump house my ThermoPro sensor couldn’t stay on line kept loosing signal till I could physically get back to my lake cabin and unplug it to reset it then after I left it would go offline again within a day or so! The Yo-link reaches the pump house with ease! But better yet it also reports to my phone via the app when temperatures dip below or above the temp range I set to be notified about if that happens! Also the sensors use two Tripple AAA batteries it comes with alkaline, but I chose to instal lithium which I know lasts up to 5 years in the frozen tundra where I live in Wisconsin from my experience with other weather stations units I had which used an outdoor sensor but they were not WiFi capable just sensor to station which sets on a table in the house. Yo-link has its own WiFi hub that’s only about 5”X5” square and less than a inch high that connects to your router and is powered by a usb cable and plugs into any power outlet, this hub is the only part that plugs in and powerful long range communicates with as many sensors you want to place in and out side of your home! So you can put them anywhere no need for power for every sensor like the other brand has to have, and the other brand doesn’t have the hub to broadcast to and from the individual sensors that’s why you get the long range, the other brands sensors has to each connect to your WiFi individually and they are finicky as to where they pick up signal! To far away or inside another out building without WiFi and you don’t get connected! So I was really pleased and surprised with Yo-links performance, and it solved all my problems for about half the money of the other brands price!

We needed these for years, didn’t even know they existed until after we had bought a wireless cooking thermometer. We have had so many items get thawed out because someone didn’t completely shut the door on the freezer in the basement and even though it has an alarm it is so soft we can’t hear it. The only one who seems to be able to hear it is my daughter. It can be going off and she’ll hear it but I can’t. This system actually hooks up to your Wi-Fi and will alert you via text if your temperature falls outside of the ranges you program for it. At first we were getting alerts a lot but since then were able to adjust the range to where we haven’t had an alert since we first got it. You are also able to monitor the temperature using the app. Very happy with purchase.

I bought these to monitor the temperature in my pump house and in the freezer in my office. This device works perfectly, and exactly as I hoped it would. I had to call customer service for some assistance in setting it up, and they were very helpful.

I bought these for my 2 freezers. We lost some meat in our freezer because I didn’t know it wasn’t cold enough and the meat thawed out. It brings some peace of mind knowing I’ll get a notification when the temperature gets above the threshold I set. It is also interesting because it shows how the temperature naturally fluctuates and I can even see when it defrosts.