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

This could not have been any easier to set up. Took ten minutes from opening box to sensor in freezer sending readings. Signal from freezer sensor in garage to hub in living room is full strength. Highly recommend

The unit works well, my only issue with the device(software) is that while the sensors report every 5 minutes when you export the data it lists only on the hour. i.e. 08:00, 09:00, etc. The exported data is reported in GMT and Celsius only.

I was reluctant to buy these, or any product similar, but because of the affordable price and the need I purchased them. I own a restaurant with 4 large freezers, sometimes an employee would leave a door open or not completely close it. These have allowed us to get warnings, at the temperatures we choose, so we don’t lose product. We receive notification on our phones from anywhere if a freezers temp goes too high. Was super easy to set up, after plugging in the hub to out router (I hope those are the right computer words) I just had to scan QR codes and we were up and running. Comes with an app that makes it easy to monitor the freezers and set them up with our needs/warning temps. After I had the first two monitors up and running I ordered two more. One in the same room as the other two freezers, in the same room as the hub, and other for the kitchen freezer two rooms away. All are working wonderfully!

Great product that actually works for freezer in garage. Impressed with product and YoLink

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.

The product is easy to install. Long range and communicates well with app and hub even though the sensor is in the garage in a freezer. Awesome