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

I must be honest and say I was a bit skeptical about this product at first (placing a wifi device inside a sealed metal box), but let me tell you, it really works! Once you get the thresholds set it will send you a notification directly to your phone (via email) when the temperature or humidity has exceeded your setting. Be mindful of your defrost cycle. It will send false readings if you have your threshold set to low. Once I got that figured out, it has worked flawlessly. You can monitor it in real-time via a graph in the app. Super impressed with this little device. It definitely gives peace of mind that my freezer packed with venison will be safe and sound on my next hunting trip.

I bought this because my freezer got left open and I had to throw away several hundred dollars worth of food since it spoiled. Today the freezer got left open yet again (I think the magnets are going bad) and I was notified within 40 minutes of it being left open. We had just completely restocked our freezer and would have probably had to throw away close to $800 worth of food. This system was insanely easy to setup and was probably the easiest thing Ive setup in years, the temperature readings are accurate to 1 degree or closer, and for the cost its just a no-brainer. The thousands of dollars this system is probably going to save me over the years is worth the cost 10 times over and then some. I couldnt recommend this system more and if youve ever left your refrigerator or freezer open and wasted food I wouldnt even hesitate to buy this system!

After 6 weeks of use in our RV basement we are very pleased with the performance. We want to monitor the temp and humidity down there due to being in freezing temps. Love the phone app with the ability to set alarms.

I bought this remote thermostat for my freezer. I didnt to loose a freezer full of meat. The thermostat is nice and small and just hangs from one of the shelves. Signal is great and with the app, I know the moment the temp drops below the alarm level that I choose. I also put one in the office where we keep guitars. This one has an alarm for humidity.

I had two devices side by side and they showed two different temperatures. Now I have one in a freezer that alarms raising the temperature to 5-10 degrees, the freezer has a digital thermometer display and it doesnt reflect an increase in temperature.

I use this YoLink hub and the two temperature sensors to monitor the temperature of my kitchen refrigerator and freezer. Set up (which is often difficult with these types of wireless systems) was incredibly easy. The smartphone app is very well designed, intuitive and a pleasure to use. I was so pleased with the product that I purchased it again to monitor a second refrigerator on a different floor of the house. Again, setup was perfectly easy. The two hubs work in sync with each other and, should either of them fail, the other hub will continue to track all of the devices. Build quality of the hub and sensors is very good. I highly recommend this product.

I have one in a detached shed and one in the attached garage. They work great and were easy to set up.

If this is the kind of device you are looking for to be able to remotely view temps and humidity this is the best one I have used so far. Even better than so called name brands. I dont get all kinds of false alarms. The interface is easy to use but not stripped down to bare minimums. Most importantly, it just works, worked easily practically out of the box. No drama, no fees. Its great.

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.

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