Google - Nest Temperature Sensor - White

Bought two of these, one for my office, one for my younger child's bedroom. My plan? Simple - schedule the one in my office as the primary sensor while the kids are in school (work from home), and schedule the one in my daughter's bedroom to be the primary during the night (keep her comfortable), and then for pre/post school and on the weekends when they're awake, use the downstairs main thermostat as the primary. Here's what actually happened. Bought two of these sensors unpacked, scanned the QR code (note: if you buy more than one and take the tabs out and get confused as to which QR code goes to which sensor, take a coin and unscrew the back, there is a QR code on the inside as well. Had to apply more strength/pressure on unscrewing the back ring than I had anticipated...), added the new sensor to my Nest account/system. Tried to connect to the thermostat downstairs, kept saying it couldn't establish a connection, move the sensor closer. Kept moving it closer and closer until I literally rested the sensor on top of the actual thermostat and it still said it couldn't make a connection. That's when I unscrewed the back of the sensor trying to make sure the battery was seated properly, etc. It was. Tried again, failed. Removed the sensor from the nest account, tried to re-add and re-sync, no luck. Then I realized that (for the first time in probably ever...) the main thermostat was not connected to my WIFI network, and hadn't been for about 2 hours. Seems like something the setup of this remote sensor should check for... like maybe a "hey, seems like your thermostat has lost its connection to your home network, and that's required for setup of this newly added device". I rebooted the main thermostat and the connections worked flawlessly, even through a few walls. If you have the nest cameras (I have one in each kid's room), and you use the default labels "office, den, kids room, bedroom, whatever" and the labels match, it will show you the temperature in the room where the camera is, which is kind of a cool feature. Anyway, then when it came time to schedule the priority of all the sensors I was a little disappointed with how "locked-in" the scheduling is. You have the options to set priority of sensors by "night, morning, mid-day, and evening". The time periods are all locked and not adjustable. You also can not set priority by the day of the week, it's just one generic priority schedule for every day of the week with locked time periods. Seems like it wouldn't be too difficult to allow this functionality (And for that matter custom label names for sensor/camera/thermostat locations). Final thing to note is the sensor is a lot smaller than I was expecting. About the size of a flattened ping-pong ball, and very light. You also have the option of just putting it on a shelf rather than drilling a hole in the wall and mounting it. Should allow you to experiment with locations or change rooms easily if it's not working exactly the way you want it to. Overall, though, great product, does what it should. Took 1 star off because of the lackluster scheduling that could be improved, and because the setup process did not make a basic check to see if the thermostat was still connected to WIFI and let me waste about 30 mins trying to set it up before I found out myself.

Our upstairs & downstairs each have separate HVAC systems. Being empty-nesters, our upstairs is seldom used. When it is, I’m too conservative to run the HVAC to heat or cool the entire upstairs at such times when only 1 of the rooms is in use. I had previous experience with an older Hunter thermostat which used portable sensors which could be used to determine which room would determine the thermostat’s temperature setting...like having separate thermostats in each room. The sensors could be used individually or combined to determine an average. I loved how useful & economical the sensor system was. The Hunter thermo eventually failed altogether. 6 mos. Ago, I replaced it with a Nest 3rd Gen Smart Thermostat along with a set of sensors which can be used to determine which of the rooms would determine the thermostat setting which when away from home can be adjusted remotely online. The room over the garage is the most difficult to keep temps adjusted and the room in the northwest upstairs corner is 2nds most difficult to keep adjusted. The thermostat is located in a room which has other rooms on each side of it insulating it from such problems. With these sensors, those rooms are now completely adjustable. I love being able to customize each room to accommodate usage by simply using or moving a sensor. I also love the economic advantages. Although the downstairs programmable digital thermostat works great, when we are away from home during extreme weather, I had to place a large visible thermometer in sight of a security camera so I could monitor the temp; however there was nothing I could do to make remote adjustments. Recently I decided to also replace our downstairs Honeywell thermostat with a 3rd Gen Nest Smart Thermostat with sensors. I plan on using the sensors to keep the temperature in certain more difficult to regulate rooms comfortable despite extenuating circumstances, i.e. north-west facing living room with 2 story cathedral ceilings and large north & west facing windows, i.e. a very hot kitchen with a hot-natured wife cooking & baking…all the time. The sensors, in combo with the Nest Smart Thermostat, are akin to the frosting on a cake. Using the Nest App I can monitor and make any adjustments online wherever we are!

We have been Nest customers for more than 5 years and we hoped that they would add these a while ago. We moved in to a new build home about 2 years ago and found that some rooms of the house are cooler or warmer than others. The builder had the A/C flows leveled, which certainly helped, but we still have a temperature issue in certain rooms. These sensors work well, but they aren't quite what we were hoping. I included a few notes below..... 1- If you purchase the 3 pack, don't pull the tab to activate the battery until after you scan the barcode. I mistakenly pulled all the tabs and then activated them, but I didn't know which tab was for which sensor. The barcode should be on the item like the rest of the Nest products, not on a pull tab. I ended up having to place them in the sun one at a time to identify which one was for what room. 2- These work VERY well for us monitoring the temperature in our baby room. I will note to not place them directly adjacent to the vent flow, but rather as close to where the baby is sleeping as possible. They mount well and it was great to monitor the temperature in their room. 3- I really wish I could set the temperature to be controlled by different sensors in different parts of the day. I work from home and my office gets very hot at the end of the day. I would love to have it sync with that room during the afternoon and the thermostat for the rest of the evening. Likewise, it would be great to tell it to turn on if the temperature at ANY sensor reaches a certain level. This would be particularly useful when we are cooking dinner and I feel like I'm sweating to death in the kitchen. Perhaps the next version will add this useful functionality. 4- I love that it tells you if the room is typically hotter, colder, or about the same as the thermostat. Our thermostat is in a bad place and we frequently wonder why the A/C has or has not turned on. Overall, we would recommend the sensors and it is probably worth it to get the 3 pack. This feature was needed for a while and we are happy Nest finally offered these as an accessory.

I have a two story home with only a single zone. The AC system does a pretty good job of keeping temperatures consistent through the house, but it does struggle in moderate weather when it's not running often. It's particularly problematic in the bedroom at night. The thermostat downstairs may think it's cooler than it really is upstairs. Even just adjusting the temperature down doesn't quite work - the temperature upstairs may climb 2-3 degrees before Nest decides its time to cool again. I had tried the Ecobee with its remote temperature sensors. This resulted in wonderful comfort in the bedroom, but their product is plagued with so many issues, one of which being that the Ecobee's remote sensors couldn't even work reliably 30 feet away in my home with almost no obstacles. So far the Nest version of the product is working well. It has no motion sensing option but I can't say I miss it since the Ecobee's didn't really work. More importantly, Nest's sensors range seems better, they are working fine to my office upstairs. Setup was quite simple, mostly scanning a QR code. The Nest app walks you through it. I had no issues. I'm giving it 4 stars because while great, I think they should expand on the functionality provided a bit. An option to average the temperature across multiple selected sensors would be a good idea. I think more customization with the scheduling instead of fixed time blocks. Motion sensor integration could still happen through other products ( Nest protect?). What's offered here happens to fit my needs pretty closely though. I'm happy its here, and I'm happy it works.

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.

My house is roughly 90 years old and for some reason, somebody thought it was a great idea to put the thermostat on a wall within which hot water flows to and from the upstairs bathroom. As a result, the thermostat tends to read warmer than the actual temperature in the rest of the house. Enter the Nest Temperature Sensor. I replaced an older thermostat with a Nest 3rd Gen Thermostat and thanks to this additional sensor, my house is now comfortably set to a consistent temperature. Using the Nest app, I've noticed a 4 degree difference between what the thermostat *thinks* the temperature is and what the temperature actually is. Setup is simple - just open your Nest app, touch the gear icon, and touch "Add product". You can then scan the code on the battery tab and follow the app's instructions from there. Placement of the sensor is easy as well. During setup, the Nest app will tell you if the thermostat can't find the sensor. Just move it to a different location and re-scan. The sensor comes with a mounting screw if you want to put it on a wall, but the sensor can sit on a shelf or table and is small enough to be unobtrusive. The only drawback for me is that, personally, I really think a sensor should be included with the thermostat from the get go instead of being a separate purchase, like comparable Ecobee products.

I bought this temperature sensor to help the Nest Learning Thermostat E control the AC temperature. The problem is most thermostats are installed in the hallway and most hallways don't have vents. This means that the temperature in the hallway is almost always going to be warmer than a bedroom, office, etc. The problem that we had was in the bedrooms it would be hot, so I'd set the thermostat to 74 degrees which read its temp from the hallway, so the bedrooms which are smaller and all have AC vents would get freezing cold. THE SOLUTION This Temperature sensor. I bought one an placed it one of the bedrooms. Now the temperature is being read from the bedroom, and to my amazement, the bedrooms read up to 4 degrees cooler. Now when I set the temp it reads from the smaller rooms, now the temperature in all the bedrooms and the office are pleasant. The only rooms that require the temp to be tweaked is our large living room. That's a simple fix though I can lower the temperature using my phone, Amazon echo or my smartwatch when were in the living room. Install could not have been simpler, open the box, take out the sensor, pull the plastic tab that connects the battery, open the nest app it finds the sensor. THAT'S IT. Well worth the money in power savings and comfort.

If you have only one thermostat in your multi-story home, you know about air stratification whereby the lower level will be freezing cold while the upper level under the roof gets unseemly warm. I live in a three-story townhouse so once I got my Nest learning thermostat, ordering one of these was a no-brainer. Now I wish I had bought the three-pack. I would only use the other two for information, not to run the HVAC but it would be nice to know what the inside temperatures of those other rooms are sometimes. Setup couldn't have been easier. The thermostat found the sensor right away. I don't understand their cumbersome, clunky time schedule for switching which sensor should be active at a time, either the remote one or the one inside the main thermostat itself. You'd think that would be a simple software issue so that one could program exact cutoff times for each sensor to be active. Fortunately, their odd schedule pairs up nicely with mine so I don't mind terribly. This was a very nice addition to my new thermostat and I'm absolutely thrilled with my purchase.