YoLink Smart Wireless Temperature & Humidity Sensor, Wide Temp Range (-22 to 158 Degree) for Freezer, Fridge, Green House, Pet Cage, Smartphone Alerts - Hub Required

These temp sensors work great. Phone app work will very east to set up.

I confused two products that I bought. Check my Govee review for this YoLink item. I blame Amazon for not having the product brand name on the items to review page … and the icon photos are extremely small! Amazon gets a 2 star on that “service”

I was looking for a system to monitor my home while I was away. After doing hours of research I selected the YoLink solution because, for my needs, it offered the best combination of available functionality and simplicity/reliability. The system connects to the internet using a small hub device. The *many* available monitors and sensors connect wirelessly to the hub using LoRa wireless technology, The LoRa wireless operates on a different frequency than home wifi and offers greater range. It easily penetrates walls and floors. All of my monitor/sensor wireless connections located in 3 levels of my home and garage are rock-solid. Setup is unbelievably simple. First install the phone app. Then setup the hub which can be connected to your home network wireless or hard wired. To add devices to the system, simply scan the QR code label on each sensor using the app and it will be added to your homes system. Thats it! I am currently using this for temperature/humidity monitoring, water leak detection and garage door (open-closed) status right out of the box. I havent yet tried programming which can add additional functionality. Using the apps notification features I can get alerts,etc on my phone and even on my Apple watch over the cellular network. I get all of this for a reasonable price. BTW, for video monitoring, I use Blink cameras. Using both systems is not cumbersome or inconvenient.

My wife was complaining that the temperature measurement reported by alexa was off. So I moved the sensor to the thermostat to see the difference and the temperature did not change. So I checked yolink app only to see that all devices were reported offline. Two door sensor, three temperature sensors, two garage door sensors, a water spill sensor, and the hub. Well, must be the hub, I thought, so I rebooted it. The hub and one temperature sensor came back. All the rest are still not reporting... UPDATE: So all the devices slowly updated themselves with yolink hub. My fault was that I did not check in the app to be alarmed when yolink hub goes offline. Now it is ON. A bit disturbing that the hub can go bizzerk while I am away and I can do nothing because it requires hard reboot. Otherwise all these units work good and I am glad I bought them. I wish they had more features.

Transmits from my shop building about 120 ft away from house and alerts me if temperature is getting close to freezing.

I have 6 of them, I tried several others before and did not worked as this ones. I use them to monitor my cold rooms and freezers and they worked as advertise. The cold rooms and freezers previously could not being measured due to “distance” or thick walls, the signal with yolink has no problem. I write this review because this just paid itself, one of the rooms send an alert for high temperature, someone left the door opened, this has just saved me a lot of money and a big headache. I recommend them!

Very happy with this Yolink hub and freezer monitor. Easy to setup.

I have a refrigerator and an upright freezer that are pretty old and on their last legs. These are helpful to alert me if the temps get too warm.

First used to monitor our garage fridge, but stupidly didnt setup the alarm strategy. The fridge failed and we lost tons of food. After the repair, bought 2 more for the house fridge and set them up properly. The house fridge revealed a performance problem that Im working to fix. Its fancy digital settings & display mislead you to expect its controlling properly, but the Yolink temperature graph seems to show otherwise.

I started out using YoLink water sensors September 2020 (4 sensors w/ hub). Installed them in my finished basement and laundry and didnt really give them much thought until I received my first notification/alert, I was doubtful but immediately went to check and low and behold, I had a slow leak in a slop sink. These sensors saved me from a HUGE headache. I went and bought another 4 pack and have these sensors EVERYWHERE. Now that I have the water issues under control, I have started to work on humidity & temperature in my home with their sensors. Temp & humidity sensors are just as easy and accurate! These are great products and I look forward to what new products will be released next.