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

Smart Wireless Temperature / Humidity Sensor Wide Range: $59.99 at the time of review We have had a freezer in our garage for a number of years. Unfortunately there have been a couple of different times over those years where the door was left cracked open or the circuit breaker blew and lost some or even all of our frozen food. So I finally decided to get a wireless sensor to alert me to high temperatures. *What I liked*: This is a complete kit using a proprietary wireless connection between the hub and sensors. It makes setup really easy. The sensors track temperature and humidity. The latter isn’t exactly important to me, but there are a lot of cases where you’d like to track how humid an area is so I like it’s an option. The hub syncs up via your home’s WiFi to an app on any smartphone. For me this is the bread and butter of this system. It allows me to set alerts on my phone for when the sensor is outside of the temperature range that I chose. You can also choose to be emailed alerts. We’ve already had the door left open by a guest and thanks to the alert I was able to close it before any spoilage occurred. So they’ve paid for themselves. The sensors use just one AAA battery. That makes powering them super easy as well. *What I didnt like*: Nothing, really. *The Bottom Line:* This is a fantastic system for tracking temperature. The sensors have a crazy long range (even considering that they’re inside of a fridge that almost certainly reduces signal). The temperature readings are accurate. And best of all, they connect to an app that lets me build custom alerts. Five stars out five. I love these and would definitely buy them again.

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.

Reliable connection and monitoring system

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.

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.

Update; changed my rating to 4 stars for two reasons : First, and most importantly, was the level of customer service received after posting the original review. This company stands behind their products and is willing to make it right if something is wrong. Second, I was able to get the hub to stay online by whitelisting the wifi. Still cant get the ethernet to stay online which only 4 stars, but this might be due to my hardware firewall, still working on it. Overall, good products, GREAT company, I can now recommend them. Worthless ecosystem, Id give zero stars if possible. Hub will not stay online, either wifi or ethernet. When the hub drops, all the sensors start going offline and I start getting water leak alerts, power failure alerts, etc. Save your money and buy something else.