Google Nest Temperature Sensor (2nd Gen) - Room Comfort Sensor with Scheduling - Works with The Nest Learning Thermostat (3rd and 4th Gen) and Nest Thermostat E - Porcelain, White

Not compatible with UK ver. of the Nest Learning thermostat 3rd Gen. Fantastic customer service from Amazon, the device was easily returned for a full refund.

This temperature sensor worked exactly as I needed it to. It allowed me to mount my Nest thermostat in the basement while using the sensor to measure the temperature in the area that actually matters. This made my HVAC retrofit much easier because I no longer had to place the thermostat in an inconvenient location just to get an accurate temperature reading. The sensor paired easily and has been reliable. Being able to have the thermostat respond to the temperature from a different room gives much better control over my heating zones than relying solely on the thermostat's built-in sensor. The app also offers additional scheduling and sensor-selection features that appear to be useful, although I haven't had the opportunity to fully test those yet. Based on my experience so far, the sensor has done exactly what I needed and I'd recommend it to anyone who needs more flexibility in where their thermostat is installed.

Was a bit concerned as to whether this was compatible with our 7 year old Nest, but works well. Easy to set up in the Nest App. Have it in our family room which is cooler in the evening so when we are in it, I have it scheduled to automatically use sensor in Family Room and rest of time use the thermostat. Can also over ride during anytime. Excellent addition for anyone who needs different temps in parts of the house

Really great add on for my Google Nest thermostat - the issue many homes have is that the location of the thermostat is central in a home but not where sleeping happens. In our upper floor where the bedrooms are, in summer they are hotter than the rest of the house. This portable thermostat in the upper level helps set the house temp according to the upper level for comfortable sleeping.

Be warned. I failed to do my research properly and it was only after failing to be able to connect this to my Nest did I then realise that these little gadgets are not compatible with the UK versions of Nest thermostats. My sensor was shipped from the US so that probably should have prompted me to read up more before purchase.