Smart Temp & Humidity Sensor, LoRa Long Range, 2 Year Battery, Indoor Monitoring for Wine Cellar, Bedroom, Nursery, Greenhouse, RV, with App, Email & SMS Alerts, Alexa IFTTT, 2 Pack + Hub

I have had these sensors set up in freezers for 2 months and they've been working great. The notifications work as expected when the temp of the freezer goes outside of the settings. They temp range is adequate for either a chest freezer or attached fridge/freezer. The display is easy to quickly read to verify the temp.Setup was very easy and took about 15 minutes to get both sensors and the hub set up.

Setup:Setup could not be easier.1. Install app,2. setup hub3. add sensor(s).4. Update Firmware.To make the hub setup quick and easy it's best to connect the hub to your router with an ethernet cable. The instructions have you scan a barcode on the hub using the app to register it, then power it up. It came online within a few seconds. WiFi can then be setup while it is connected via ethernet cable. If you wish to use WiFi power off and relocate the hub. It takes about 30 seconds to join WiFi after being powered up.Adding the sensor(s) is similar. Scan the barcode on the device with the app, then turn it on using a switch on the back of the unit. It will connect to the hub quickly. It is best to configure all the alerts and other settings while you have the sensor on a desk, then when the configuration is complete place the sensor where it is needed.Both the hub and sensor had the latest firmware as delivered which is awesome.Use:The LCD's still work even at freezer temperatures of -5f. The batteries in the LCD sensors will not last very long in a freezer. maybe 9 months, I have ordered some sensors that do not have an LCD and come with Lithium batteries good for 5 years.I'm really impressed how well the sensors work inside a freezer clear the other side of the house from the hub. It lives up to the hype. Sensors contact the hub about once per minute.App:The app is very good, there are some really detailed statistics you can view and there is an option to download data. I have included a screen shot of one of the charts showing a 24 hour view,Alerts:After setting thresholds, alerts can be sent via the app on your phone, an email, or SMS. SMS is limited to 15 SMS's per month but email works just fine and has no limit.Yolink Eco system:The number and variety of devices you can add to the hub is impressive. Given how easily the system and app works I'll be adding devices in the future.Highly recommended.Update:Jan 2026.The batteries showed half a charge after 14 months in a fridge. I replaced the alkaline AAA batteries with Energizer Lithium cells.

I bought this plus 3 extra temp sensors. I can see the temps of my fridges and freezes from anywhere as long as I have my phone with me. Easy set up. I can set alerts to go off when temps drop to a degree of my choosing. Provides peace of mind.

Very easy to setup, Lora range works well from my greenhouse(about 110 feet) from base station . The grafting of data is very helpful. The alerts are a little clumsy to set up

I bought this after a freezer was accidentally unplugged and ended up ruining $100s worth of food. Setup was very easy. Downloaded the app, paired the base, then paired each sensor. It took all of 15 - 20 minutes. The signal seems strong enough for my use, there is about 20ft between my freezers and the base. So far the battery has stayed strong and the connection has been stable between both the sensors and to WIFI.A few days after setting the sensors up, I found that one of my freezers was not consistently getting to the deep freeze temperature range, I was able to adjust the thermostat and the food isn't burning as quickly in that freezer anymore. The device likely paid for itself with that single discovery.A bonus is that I found YoLink has an integration with Home Assistant. It allows me to double down on the alerts and get the freezer temperatures on my dashboards for additional ease of mind.

Our kitchen fridge died recently while we were away and we ended up coming home to a stinky and very not-fun surprise. In theory if we had known, we could have asked someone to help us to take care of it while we were away. Therefore after purchasing our new fridge we chose to buy this temp and humidity monitor to help keep us informed of any weird temp fluctuations that may signal any kind of malfunction.First of all these monitors look great - they display the temp and humidity on the front screen in simple, easy to read, standardized characters - which is super convenient when you open your fridge and just want to quickly glance at the current stats. The accompanying "Yolink" iPhone application offers much more features and allows you to track and export the measurement data and history, along with setting thresholds/intervals for sending alerts. Alert options include email, SMS, and in-app notifications - and they all work quite well. Also, unlike some other types of monitors, the entire monitor can live inside of the fridge and it will broadcast a Wifi signal from inside without having to run an unsightly cable from it (through the door seal or through a hole).Since this particular set came with two sensors - we placed one sensor in our upstairs fridge and one in our downstairs (spare) fridge. As our home is over 2500 square feet, we set up the the hub to be somewhere in-between and to date the hub is receiving very strong signal.My only complaint is that the set up instructions are written in very small writing and I had to repeat the set-up process twice to get mine to function properly. For whatever reason upon initial setup my pieces were not connecting. There are steps where I had to connect the hub to my wireless router etc. that may or may not apply to your situation. In the end though, it connected and is up and running.Only time will tell how long the batteries will last for each sensor while stationed inside of the fridge. So far so good though, highly recommend this set if you are like us and want to avoid the situation of a monitor device sitting outside of the fridge while running a probe inside of it through either a hole or between the door seal.

Great temp and humidity sensors. Easy set-up and they do what you would expect them to do. App is intuitive and allows you to set alerts for temp and humidity which was helpful for me as I placed one in my temperamental refrigerator and wanted to make sure it was behaving. I replaced a competitors product which used so many batteries I spent more on batteries in the first two years than I did on the sensor.Highly recommend.

I have had issues where our fridge/freezer circuit board failed or the RV fridge popped a breaker and we weren't aware there was any issue for a while. I went looking for a solution and found these. Great reviews and, during the Amazon Prime sale a pretty good price. We also have a two story detached garage that is climate controlled with mini splits for each floor and I just had to have both units serviced after the summer heat got them up to 90+F so, although less critical than the fridges, I was looking for a way to keep an eye on those as well. So, in addition to this hub package, I also bought some extra add on sensor units. The app and setup was super easy and I now have everything monitored with alerts set. The range appears to be as they stated with the 2nd floor garage monitor showing full signal strength through two Hardie board exterior walls. I hope the batteries last as long as they claim and will come back and update this review if not.Anyone wishing to monitor temperature/humidity around their property, I would highly recommend this setup!

Grundsätzlich funktioniert das Produkt sicher gut aber das Problem ist das es aus Amerika kommt und über den US Server läuft.Zusätzliche Geräte bekommt man nur sehr schwer über die Amerikanische Seite und dort wuchern die Preise wegen des Versandes + Zollgebühren.Ein anderer Anbieter aus England auf Amazon hat nur Sensor ohne Hub verkauft, hab den dann aber nicht mit diesen Hub verbinden können, da der Sensor Plötzlich eine andere Typennummer hatte, und der dann auf dem EU Server laufen sollte.Für EU habe ich aber keinen anderen Anbieter mehr gefunden und schließlich alles wieder zurück geschickt.

This sensor is working and giving the signal very clearly and occurately...

Excellent quality hardware, well packaged upon opening. Hub and sensors both seem solid, not cheaply made and great quality. Setup was very easy, less than 5 minutes. Recommended setup is to hardwire hub by ethernet cable to router or your home hub. Connected within 10 seconds. Lights easy to see for power and internet connection.Using smartphone to scan QR code simple and identified hub immediately. App on phone allowed hub to be assigned to a room. App simple to use and I linked the Yolink app to my Google Home without difficulty.Temperature sensors also worked right away, no issues with identification of product using QR code on devices. Converted from Farenheit to Celcius easily. Temperature readings instantly and calibrated perfectly to temperature measured by another device.Easy to set up warning temperature alerts and both unlimited email and limited SMS texting alerts (20/month) included as part of product purchase.

Lovely device to monitor the temperature

The hub is an absolute pig to set up but once you have done then it’s a great piece of kit for ensuring that I’m notified if the freezer out in the garage fails. I’m using the other sensor to keep an eye on the temperature in the freezer in the house.* important to note that it will initially tell you that no internet has been found - just ignore it and carry on with the set up*