How Nest products help presence sensing

Some Google Nest products can use their sensors to detect activity in your home.

These are the sensors each product uses to detect activity:

Google Nest products	Sensors
Nest Learning Thermostat and Nest Thermostat E	A motion sensor detects movement in the room. Your thermostat also notes if you manually adjust the temperature on the device. Note: Google Nest Temperature Sensors don’t have activity sensors, so they can’t help with presence sensing.
Nest Learning Thermostat (4th gen) and Nest Thermostat	A Soli sensor detects motion proximity and presence of nearby objects. The Nest Thermostat also notes if you manually adjust the temperature on the device.
Nest Protect	An occupancy sensor detects if someone is in the room. Note: To maximize battery life, battery powered Protects check in less often, but they can work with other Nest products to help improve presence sensing accuracy.
Nest × Yale Lock	An optical sensor detects if the bolt is open or closed.
Google Nest speaker or display   Google Nest Hub (2nd gen)	Uses touch or voice control to interact with the device.
	In addition to touch or voice control, a Soli sensor detects if someone is nearby.

For more information about Nest product sensors, go to Sensors in Google Nest devices. 

Note: Nest cameras, Nest doorbells, and Nest Hub Max's camera won’t switch devices in your home between Home and Away modes.