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

In AZ, barely open garage freezers can become very costly. We have had to refill our entire vertical storage freezer twice this year and with 2 cooks in the house, theres lots of opportunity for mishaps. This has been a welcome solution. Pros - Peace of mind. - Once setup, has worked reliably without hassle. - Has already paid for itself several times over in saved food. - Clean app interface (although some unnecessary backtracking involved). - Alerts trigger quickly and loudly on connected devices. Cons - Mobile apps only, no desktop application. - More customization would be desirable. Notes - My observations are all made using Mac devices (iPads, iPhone, Macbook) - This is not a quick setup, should allow at least 1.5hr for setup, testing and customization. - Recommend do not try to setup wirelessly, plug hub into router during setup process. - Installed on my own, but they offer assistance if needed. - I keep the alert range set @ -10F -- +18F to allow for freezers to be loaded/unloaded without alerts (temps can be adjusted to 1/10 of a degree). - May be a good low cost alternative for small business owners. Overall, very happy with this system, the 2 sensors are monitoring 2 freezers in our garage and I will be ordering more sensors soon for indoor fridge and perhaps for terrariums/vivariums.

We are in North Central Florida and have a farm with valuable temperature sensitive plants in high tunnels. I used to have to start heaters when the weather station reported near freezing, then Id have to check that the heaters were on every hour or so through the night. WiFi based monitors did not have the range to reliably hit our structures. Enter LoRa. We need minimal data, now and then. The YoLink system was perfect. It is so simple. Now I can get to sleep, get an alert when temps approach freezing, and then go back to bed. Each tunnel has an alarm, and if the heater shuts off or it gets too cold-- I get a message. Perfect. I added some motion detectors to let me know if deer or local delinquents are on the farm. They are perfect too. Great products, and the ease of connection is the real bonus of the YoLink system. The system is generally inexpensive. My only criticism is that it would be great to have ultra-low cost ($10 range) LoRa relays that could trigger 12-24v to actuate any device. Id love to have all of my irrigation zones on the network. Right now the closest solution is $45, and not in the budget. Overall, great for an introductory LoRa system.

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.

humidity readings are off, i can put the same unit side by side and 1 is 83.5 humidity the other 79.3. always 3-4 degrees off each other, temp off but by 0-1.5 degrees... i think humidity reading are higher than normal, since my other units read humidity 5-8 degrees lower constantly BUT i dont know which is the accurate reading! I dont get the email alerts when reading are above threshold which is cool, but still returning,

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.

You cant go wrong with these sensors. They are easy to program and have a long range. Tech support is great too.