![elago Lock Designed for Nest Learning Thermostat [Black] - Compatible with Google Nest Learning Thermostat 1/2/ 3 Generation](https://images-na.ssl-images-amazon.com/images/I/61fo6od1W1L._AC_UL160_SR160,160_.jpg)
The Nest thermostat is algorithmic; this means it needs to know certain conditions such as are you home and this translates into motion detection by the thermostat and the use of your smartphone location as in being home or not. If the Nest thermostat were three sided, if the sides also picked up motion detection, a lot would be solved when it comes to the thermostat knowing you are home. A lot would be solved too if the thermostat's away from home and being at home but hunkered down for the night data points were on the ball. Until then, get the remote sensor.
The Nest thermostat is heavy on using its app on your smartphone to know if you are home AND it uses a sensor to know if you pass in front of it. If you have just one thermostat in a two-floor house, or if you have multiple thermostats but you either stay to the left or right of any one of them or you are downstairs during the day or upstairs at night, a lack of motion detection wins out over the use of your smartphone showing you are inside the geofence of your home. This sensor is for one thermostat with one of four preset time periods (morning, afternoon, evening, night) that are fixed. You can choose just one of the four to prioritize temperature wherever the sensor is placed away from the Nest thermostat it is linked to. So if you have one thermostat for a two-story house, having a sensor upstairs to prioritize a pre-set temp of say 67 degrees from 9 pm until 7 am is great. Or if you have a child’s room, you can place the sensor there and prioritize your heat setting. The whole point of the remote sensor is to bypass the thermostat’s detection or lack thereof of people passing by it to show it you are home so the sensor can tell the thermostat what temperature you want at what time where. Of course, if you have say a second floor Nest thermostat and you want the child’s room to be 70 then yes, the entire second floor is 70. However this beats the thermostat going into eco mode (which you can set up to 65 degrees anyway on the thermostat even without a remote sensor) and keeping the entire second floor cold. In general, the Nest thermostat is good except for geofencing. It is not bad but it is not good. If during the day you are on a floor where you do not pass by the thermostat, it most likely will figure you are not there and go into eco mode. The result is you are cold, the thermostat’s temp is in eco mode, and you are not happy. The remote sensor is something like Civil War technology. It works, kinda. It does not detect motion. It only detects temperature in the room it is in and does absolutely nothing unless the prioritized zone and time period are in place. If you are downstairs most of the day, who cares if the upstairs thermostat goes into eco mode. If you are asleep at 10 pm and the thermostat thinks you are away, it goes to eco mode and you are cold. Yes the thermostat learns somewhat. Yes, it uses geofencing. Yes, it recognizes motion. Add the three together and Google does not yet have it right. Using this remote sensor lets you get a reasonable temperature staying put on the dial for a specific time period regardless of the thermostat’s going off the rails with its algorithms. I have two sensors: one is for the second floor from 9 pm until 7 am so I have the heat at 70. That is what I like. For central air, I have the thermostat in the second floor hall near the return. On the first floor it gets really hot from 1 to 6 pm. So a sensor on the first floor, linked to the second floor central air thermostat, gives me the chance to prioritize the central air thermostat setting to 66 which keeps the first floor bearable when it is 98 degrees out. The ability to prioritize the temp on the first floor with a second floor thermostat is great. After that at 6 pm, I don’t care if the Nest thermostat is bouncing around trying to figure out who is home and what it is learning. The Nest thermostat is hit or miss; the remote sensor helps it get a few more hits than before. I recommend it.
| Brand | |
|---|---|
| Model Name | Nest Sensor |
| Product Dimensions | 2"D x 4"W x 4"H |
| Controller Type | Google Assistant, nest |
| Special Feature | Temperature Sensor |
| Color | White |
| Included Components | 1-pack Nest Temperature Sensor Mounting screw Installation card 3-pack 3 Nest Temperature Sensors 3 Mounting Screws Installation Card |
| Power Source | Battery Powered |
| Item Weight | 0.1 Pounds |
| Voltage | 3 Volts |
| Material | Plastic |
| Shape | Round |
| Finish Type | Brass |
| Control Type | Button Control |
| Control Method | Voice |
| Connectivity Protocol | Bluetooth, Wi-Fi |
| Style | 1 Pack |
| Backlight | Yes |
| Number of Batteries | 1 CR123A batteries required. (included) |
| Manufacturer | |
| Part Number | T5000SF |
| Item Weight | 1.6 ounces |
| Country of Origin | China |
| Item model number | T5000SF |
| Batteries | 1 CR123A batteries required. (included) |
| Is Discontinued By Manufacturer | No |
| Size | 1 |
| Finish | Brass |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Special Features | Temperature Sensor |
| Batteries Included? | Yes |
| Batteries Required? | No |
| Battery Cell Type | Lithium |
