Google - Nest Temperature Sensor - White

I rate this product as excellent, 5 stars, due to the face that this is the essential item to completing your Nest thermostat, and Smart Home. When we first purchased our Nest thermostat, we had trouble keeping the house a consistent temperature. If I had the heat set at 70, the upstairs would get to 70 and shut off based on the temp the Nest thermostat was reading at the thermostat. With some adjustments to our vents in the home by closing some off and opening others more, we now have it under control, but mostly thanks to the Nest Temp Sensor. Having the ability to determine which sensor is the primary sensor in the Nest application, makes this an absolute necessary purchase at its price point. We now are able to keep the basement and upstairs zero to one degree apart from one another. For anyone with a split level, two level, or multi-level home, this should be at the top of your shopping list when considering the Nest thermostat.

I purchased a extra nest sensor and now I have nest thermostat and three sensors. I love having for locations in my house to be able to see the temp in a curtain room and able to set the thermostat to work off a sensor in a pacific room or floor off the house at different time of the day or night.

Bought with the Nest Thermostat E. House layout has the thermostat in a room with a vaulted ceiling, making it difficult to reach desired temps in other rooms, specifically at night. This allows us to monitor and set schedule to obtain desired temps.

Gets the job done. Perfect pair with the Nest thermostat

It’s great overall and so far has gone offline once. Has kept the other side of the house warm. Love this!

Installed this in my upstairs master bedroom. It’s progamable in the nest app so I can make the room cooler at night I now sleep like a baby

Added this upstairs and it helps us balance out the temp in our home. Should have done it sooner.

Great concept, poor implementation! Guessing a lot of people have this problem with forced-hot-air systems. The primary thermostat is on the main level and the (main) bedroom is on an upper lever - which, in the dead of winter/summer has a radically different temp from that main level. For instance, look at the uploaded pic. Main level is 63 and the Master Bedroom is 53. Not a problem during the day when no one is there but before bed you'd love to be able to set the Bedroom temp to what you like!? (yes single zone the the main level will get (much) hotter.) Nest will allow you to use the sensor for anyone (or all) of 4 pre-defined time slots (morning, afternoon, evening, night) BUT these times are preset and can not be changed. Pre-set times: Morning: 7am to 11am Midday: 11am to 4pm Evening: 4pm to 9pm Night: 9pm to 7am Sooooo, if I want to use the bedroom sensor to warm up the room, before bed, I would have to have the rest of the house sweltering from 4 to 9 or 9 to 7. Seems like - for as technologically advanced as these are; you'd be able to say bring my bedroom temp up to "X" at bedtime then revert back to the main thermostat!?!? Bottom line: for $40 bucks you get an expensive thermometer that tells you what the temp in that room is but really doesn't give you a way to truly "fine-tune" it.