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 bought this because we have a stand alone freezer in our basement. We had an instance where the door was somehow not closed all the way and we lost a lot of food. I had been searching for a device to alarm us if the temperature dropped in the future. Im an old guy and did have a couple of snags in initial setup, totally my inability toread directions. I attribute that to being a man! Thankfully the support I received from YoLink was the best support I have ever received for anything I have ever bought. Thanks to the guys at YoLink, I have an up and running unit connected to Alexa as well! Thank you!

I bought this over 6 months ago and the batteries in the sensor are still near 100%. Setup was fairly easy. I use it in a deep freeze set at -10 degrees. Every once in a while I will check the app and see that the temp in the freezer is being maintained. Well it finally happened. Was away from the house and received a text and email notification that the temp in the freezer had risen above my preset +10 degrees. When i arrived back home I saw the freezer door was not completely shut. So the sensor and alerts worked perfectly and saved me hundreds of dollars of spoiled food. Highly recommend for the piece of mind it provides.

We have a refrigerator out in our uninsulated garage. I wanted to monitor the temperature for 2 reasons. ONE, during the winter I want to ensure temperatures are maintained. TWO, this is an old fridge, so I want to be alerted if it stops working altogether. I love that these monitors collect a history so that I can easily keep an eye on things. I found the setup to be very easy and quick. I connected directly to wifi using my Eero system. I love that there will be alerts sent directly to my phone so that I can take action ASAP. I just installed this today and I will absolutely update my review if anything changes.

I use these in my garage fridge/freezer. We have a stand-alone garage, in SoCal. So it gets HOT in the summer. It is also on a separate circuit from our home, so if/when the circuit randomly blows, we have no way of knowing unless we go in the garage and try to turn on the lights. That makes this thing super useful. Of course, when we go out of town, now well also know if theres a broader power outage and our food is all gone bad. It was a cinch to set up, and the app is very functional. I love that I can set a temperature range. It helped me a) make sure we had the fridge and freezer set to good settings for the temperature we wanted and b) establishes an alarm so we know if something has gone wrong and the power is out in the garage.

I dont write a lot of reviews, but this one deserves my time to do so. We have a freezer in our garage, and for whatever reason, the door has been left slightly ajar a few times. And there we are with probably $75 of food that probably should be thrown out. So I went looking for a solution to let me know when thats happened. The YoLink is working great, and has already notified me twice that the freezer door was ajar (temperature rising). Our network router sits in a closet in the middle of the house, and the YoLink hub is plugged directly into that with the supplied ethernet cable. Then the YoLink sensor is in the freezer. It has no problem connecting with the hub through 4 walls and the freezer door. My only outstanding question is whether the sensor batteries will last very long. But still this product is well worth the money spent.

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 had to have my Nephews kids set up for me, as its too much hassle for. I got one sensor in basement freezer, and one in upstairs freezer, and they both get out. My problem is all the false alarms. I set mine to 20°, and my analog gagaes dont show that temp. Another more important thing is if its hooked up to wi-fi how much snooping is going on?

Los estoy utilizando en mi heladería y tengo que decir que funcionan muy bien. Los sensores de movimiento, los 3 termómetros, los sensores de puertas el hub y el altavoz. Todo está trabajando muy bien. La aplicación es un poco complicada de configurar si necesitas que funcione específicamente en ciertos horarios y que tengan un alarma específico. Pero se puede lograr. El hub lo tengo conectado con cable ethernet y los varios sensores están en un local de 110 metros cuadrados con varias paredes. Recomendados.

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.

Be aware of what you buy. An other brand I bought only works on Bluetooth so you only have phone/app readings when you are near them. But this product works on wifi, so you can access them anywhere thru an app on your phone AND get phone alerts for temperature or humidity. The charting/history granularity is one hour minimum however alerts can be set for a minimum of 10 minutes. That all said if you wants alerts because of a power outage, then your wifi may be out also so you would not get alerts or readings without some backup power source. The units are battery powered and with a battery status icon on the app. The hub unit plugs into ac power. It can be set up via cable to a router or via your wifi network.