In this article I’ll be sharing my impressions of the new Nest Temperature Sensor. The Nest Temperature Sensor is a wireless sensor that is designed to work with the Nest Thermostat to provide remote temperature sensing capabilities.
Nest developed this sensor to address the fact that most rooms in your home are never the same temperature. The problem is your thermostat can only read the temperature in one location at a time. Often thermostats are located in a bad spot that is not representative of the temperature of the living space of the house, or the rooms that you really care about.
The Nest Temperature Sensor seeks to address this issue by allowing the Nest Thermostat to read the temperature in one or more remote locations in your home. You can then tell your Nest which room should be a certain temperature at a specific time of day.
The Nest Temperature Sensor is available in a single pack for $39, or a 3 pack for $99.
The Nest temperature sensor works with the 3rd generation Nest Learning Thermostat or the Nest Thermostat E. If you are not sure which version of the thermostat you have check out the guide to identifying your Nest thermostat.
If you have a 1st or 2nd generational model then you’ll need to consider upgrading your thermostat in order to use the sensor.
You can use up to 8 temperature sensors with a single thermostat with a maximum of 18 sensors per home.
- Model – T5000SF
- Size – 1.9 in x 1.9 in x .8 in
- Weight – 1.6 oz
- Color – White only
- Battery – CR2 3V lithium battery (lasts up to 2 years)
- Sensors – Temperature sensor only
- Wireless – Bluetooth Low Energy (~50 foot range from thermostat)
Inside the Box
Inside the box is the temperature sensor, mounting screw, and instruction card.
The sensor itself is very small and lightweight.
The battery compartment is on the back of the device along with the mounting hole and the QR code used for the setup process.
Wall mounting is not required, you can simply sit the sensor on a shelf, or table as long as it has a few inches of space around it for airflow. A magnetic mount like the Nest Cams have might have been useful for providing more mounting options but you could always use some 3M velcro instead.
To set up the sensor open the Nest app, click the gear icon, and select ‘add product’. Then use the app to scan the QR code on the back of the sensor.
Next find a spot to place the sensor in your home. The maximum range on the sensor is about 50 feet. My thermostat had no trouble detecting the sensor one floor away.
After you find a location the app will test communication with the sensor to make sure it’s within range of the thermostat.
Once the sensor is activated and connected the remote temperature reading will be visible in the Nest app. From the main thermostat control screen you can toggle between the internal temperature sensor and the remote sensor.
In the Nest Thermostat settings you can configure schedules for the various sensors. I configured mine to switch to the remote sensor in the evening and overnight so my master bedroom will be the exact temperature I want while I’m sleeping.
Essentially this allows you to choose which sensor has priority at certain times of the day.
So far I’m really pleased with the Nest Temperature Sensor. The setup is really easy and the sensor is small enough that it will barely be noticed. I also think it’s going to make sleeping easier since my bedroom will be exactly the temperature I set it to while at night.
At $39 I think the price is a bit high considering it’s only a temperature sensor, but Nest in general is a premium brand that tends to charge a premium price. The sensor would be a better value if it also included a humidity sensor too which is the one thing I think is lacking.
Although if you’re already spending $250 on a learning thermostat you might as well buy the temperature sensor to get the most out of your investment.