2-Pack X3 Version Temperature Humidity Data Logger, Longest Wireless Range, 5+ Years Battery, Emails/Text/App Alerts, Alexa, Best Freezer, Greenhouse Monitor. Hub Included

This YoLink X3 sensor is exactly what I was looking for and covers all my needs perfectly. The setup was dead simple—I had it unboxed and running in just a few minutes without any headaches. I'm using it to monitor my fridge and freezer, and it has been absolutely reliable. The signal is strong, and I haven't experienced any dropouts. What really blows me away is the battery life. For a device living in the extreme cold of a freezer, the battery has been amazing and just keeps going. The best part for me was the third-party integration. It connected to my Home Assistant setup without any fuss, allowing me to log data and create automations easily. If you need a hassle-free, long-range sensor that just works, this is the one.

I am very satisfied with the YoLink 2-Pack X3 Version Temperature Humidity Data Logger. I am finding it to be an excellent solution because it seems to be very reliable, consistent and accurate. The key requirement for me was the ability to sample the temperature and humidity frequently - every 5 or 10 minutes. Most of the other inexpensive ones that I found being offered on Amazon did not meet this requirement (very coarse sampling intervals) or seemed to have accuracy issues. But YoLink's version X3 product has been great - it samples every 5 minutes and is accurate and stable. Another big positive is its long-range connectivity to the hub (tested it for over 100 meters). All of the other products I tested had frustrating wi-fi range issues which made them unusable for my house. The Yolink X3 unit has been great - I installed one unit at the back of my house, and another in the attic - far away from each other, and I found both to successfully connect with the hub and provide consistent data. I especially appreciate the professional-grade data logging capability with access to historical records. With its rugged construction, long-term outdoor use, this unit is a highly dependable and low-maintenance choice for my home monitoring needs.

The temperature and humidity sensor works well and are very accurate. Mine is outdoors and is about 100ft away from the hub. It works well in the semi-protected area that I placed it in. The device provides surprisingly accurate measurements and is easy to set up. It connects seamlessly to my YoLink hub and my android phone. It has much better signal range and outperforms other wireless thermometers I have had in the past. An indoor color lcd display would be an ideal addition to this product. Maybe someday :)

I have several YoLink temperature sensors in use at our restaurant to keep an eye on our fridges and freezers. Overall they do a good job and have already prevented loss of food due to staff leaving doors open and a failing compressor. I have the basic white ones and 'upgraded' to a couple of the X3 ones with the LCD. I was hoping to have these last longer, but instead I ended up changing out the batteries within 7 months. The white ones lasted easily over a year in the same setup (metal commercial fridges about 15 feet from the hub). Trying now with standard Amazon Basics batteries.

I love the Yolink products. This one works very well and has kept very good track of our outdoor temps. Alerts when freezing temps arrive.

I bought the YoLink thermometers specifically to monitor my garage fridge and freezer, and they’ve been flawless. The setup was simple enough, scan the QR code, name the device, and it immediately started reporting accurate temps. What really sold me is the range. My garage is detached, with thick walls and plenty of interference, but the YoLink LoRa system doesn’t care. Both sensors report consistently without a single dropout. The app graphs temperature history clearly, so I can see exactly when the compressor cycles or if the freezer door was left open too long. They integrate seamlessly into my home assistant system. I have automations that send push alerts if either appliance drifts above a set temperature, and I even trigger my smart lights to blink red if my freezer rises above -5°F. It’s all been rock solid. Battery life looks fantastic so far, but it has only been 6 months or so.

Easy setup and works great. Excellent remote connection over long distance and the range is far better than my other Wi-Fi based devices.

I have 18 YoLink devices/sensors at my house. I love the system and all the various sensors it supports. Everything is very long range RF that has no problem going through exterior and interior walls and floors. I have one of these in the fridge, the other in the freezer. They work very well. It takes about half an hour the first time you put them in place for the reporting and accuracy to stabilize. You can get temp and humidity readings on the app, and some very handy graphs of how temperature changes over time. You can see low/high/average temperatures and lots of historical data. I'm a data geek - I love knowing all about things. You need the inexpensive hub and just one sensor to get started. Lots of bundled deals are available. Like all YoLink sensors, you can set alerts if things fall outside a predetermined range (of temp and humidity in this case). Alerts can be any combination of app alert, text, and email. You get a certain number of free alerts a month, after which you can buy inexpensive 'alert bundles'. You can name all sensors - I use their actual locations in the house/yard so I can instantly see where the problem is. I have two outside sensors - one on the mailbox, the other on a gate. Works over the Internet, not just local wi-fi. Highly recommended if you need such measurements. All the YoLink sensors I have (all 18 of them) have been reliable and consistent. The water sensors have saved me twice now from potentially expensive water leaks (80 year old plumbing). The app even shows battery levels for every sensor. Just magical.