YoLinkX3 Version Temperature & Humidity Sensor, Supports App Real-Time Data Refresh, Alexa, IFTTT, Home Assistant Integration - YoLink Hub Required

I bought two of these one to monitor temperature in my heated work shop and one to monitor the temperature in my heated garage. They are accurate and work from a long distance away. If someone leaves a door open or a heater quits and the temperature drops below my set point it will alert me which has worked great. The app has a tab to instantly update temperatures real time which is a great feature that the outdoor temperature sensors do not have.

works well and I can use it anywhere in the house.

Yolink products are rock solid. I started off with this single termperature/humidity sensor and quickly expanded to at least 20 other various kinds of sensors over the next few weeks.The sensors are easy to add to your network. You simply open the app, scan the QR code on the sensor, name it, assign a room and you’re done. Sensors are all hyper-responsive and battery life is incredible. The range is likewise great. My farthest sensor is in a chicken coup behind a huge barn several hundred feet away from the Yolink hub. Reception is still great.The automation options built-in are good. There’s room for improvement. For instance, I have a temperature sensor in my office that turns on an AC plug to my air conditioner. The only triggers I can use from my thermometer sensor are high and low temp alert. I define high temp as 75 and so AC kicks on at that threshold. That works well. But I want the air conditioning to turn off at another threshold, say 70 degrees. I would have to define my low temp alert as 70 in order to make that happen. That doesn’t really work for me for several reasons. I’d like to have a heater that kicks on at 55 degrees, for instance. I could do this with two sensors but that seems wasteful. So I’m looking to integrate with ITTT (If This Then That) service to do more finely grained automation. I think it’ll work.Even though the built-in automation isn’t quite there yet, the hardware is so rock solid and awesome that Yolink gets my highest recommendations.

In the past, a small refrigerator that I use for a wine cooler stopped working. I did not discover the failure for several days until I happened to open the small refrigerator and discovered it was very warm inside. If you have expensive wine stored in a wine cooler that stops working, it can be a costly failure beyond just the repair to the cooler - it can ruin expensive wine. I purchased a YoLink X3 Temperature & Humidity Sensor and placed it inside the wine cooler. The LoRa technology used by YoLink provides a reliable signal from the temperature sensor, even though the sensor is enclosed in a metal refrigerator, so my home automation system can now alert me if the wine cooler ever fails again, and I can remedy the problem before the wine is damaged by storage at high temperatures.

I use these X3 temperature / humdity sensors in my refrigerators. They track the temperature at a higher frequency (as frequently as once per 10 mins, or 6 times per hour) than the regular YoLink temp/humidity sensors (the regular sensors only track one data point per hour). These X3 sensors still only call home to the hub once per hour, even though they are tracking the intermediate data points every ten minutes. They do a great job contacting the hub reliably from inside the refrigerator cabinets. I also really like that they include LCD screens too, allowing a quick visual check when I open the fridge for normal purposes, without needing to necessarily open the app to also check the temperature and humidity levels. The LCD built into these is far superior to some others I've had in the fridge on non-smart temperature probes; it remains high contrast and easily readable, where those others would tend to fade and be sluggish to refresh.All in all, I really like these sensors. However, I think a more reasonable price would be in the $30-$35 range. $50 msrp / $40 sale price is a little steep for these IMHO.

Great product. Links with Alexa to make announcements for low and high temperature. It even works well inside the freezer.

I like the programmable alert function.I am using it with the YoLink hub.

Unlike what it claims in description, it is not accurate at all. I used Boveda calibration kits (75% and 32%) to calibrate X3 sensor together with other SensorPush and Acurite sensors. And X3 should be adjust by -5% at 75% end and +4% at 32% end. This is really inaccurate and you cannot adjust it so that it can be accurate in entire humidity range. Very disappointed.

A little expensive but useful if you wish to monitor the temperature of a room during a heat wave.

Bought this (Model YS8006) as it was advertised to be more accurate than their previous one (Model YS8003) and had less error (RH 2% vs 3%). However, when it arrived, the calibration was way off compared to my NIST certified hygrometer. Putting it through the pure salt + distilled water and damp cloth calibration, this X3 model performed worse than the non-X3 model. And the X3 cannot be calibrated as it exhibited non-linearity (lower than normal at high RH and higher than normal at low RH so no offset value can correct for this). Tech support did not understand the technical issue and offered a canned response which showed they did not read my question. Don't waste your cash on this more expensive version.