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

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

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.

One is monitoring vegetable storage in the garage, one is in the chicken coop, both places where we need temperature and humidity monitored. We have the app on two phones, base station is in the middle of the house. Great buy.

Using to monitor temperatures in Kitchen and Garage freezers. Also purchased YoLink Water Sensor 2 and that is working as expected. The hub and sensors have a nice look and feel. Tested high and low temperature alerts and can say they are working well so far. The YoLink app on the iPhone looks clean and works well for me. Dropped a star because setting up the hub to my WiFi network was a challenge. The hub only supports 2.4Ghz WiFi and apparently the iPhone must also be on 2.4GHz WiFi in order to set up the hub to work on a secure home WiFi network. The iPhone kept connecting to 5GHz by default and could not complete the hub setup step. Since 5GHz signals have a shorter range than 2.4GHz, I solved it by taking hub and phone to far end of house where I had a weak WiFi signal. Was then able to setup the hub to our WiFi.

Bought this Fall 2022. Able to track indoor and outdoor temps in our house with our cell phones at home, out working and shopping, and away on vacations. Keeping us informed about our home heating situation and telling us what the outdoor temp is without another outdoor thermometer. The best most affordable choice on the market for homeowners. The outdoor sensor should be placed in constant shade on a north side not close to any heat source like a window or vent or an uninsulated wall. The WIFI for reception for all devices is good. Our base unit is in a basement home office. A sensor is in a less heated basement near the water service. Another sensor is in our master bedroom. This gives us our outdoor, basement and upstairs conditions that together give us a full understanding of our indoor/outdoor freeze potential. On vacation last winter, we realized from this YoLink system that our thermostat set backs to reduce our house heating was not working as expected. We called our daughter who came over the house and corrected our thermostats to the settings we wanted. We probably saved the cost of this equipment by substantially reducing our heating energy that one time.

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.

We purchased this to alert us to power loss or freezer failure. Our two sensors are located one in each of our freezers. The hub hooked up via ethernet. Easy to scan hub and both sensors into the app on phones and set up alerts. The few questions I had were answered quickly by customer support via email so we have been happy with this purchase and it is doing what we need it to. We had a power outage and received notification on our app and via SMS so we could monitor and respond.

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.

First, setup was very easy. After calibrating all of the sensors (I have 7 total) I put one in each room and one outside. I can now check the temperature in each room from anywhere. Theres only two issues Ive had so far. 1) after setting up the hub, it downloaded a couple hundred GB of data from the internet. I checked the firmware for all of the sensors and the hub but they were all up to date. Id like to know what all that data was for. 2) it works with Alexa... as long as you only want to know the temperature. It doesnt show the humidity and you cant use it as a trigger to turn on the dehumidifier when the basement humidity gets to 45% or to turn on the fan when the room gets to 74°F, for example.

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