Google Nest Learning Thermostat 4th Gen Installation And Configuration Manual page 24

Power:
Built in rechargeable lithium-ion battery
Uses less than 1 kWh/month
Voltage requirement: 20-30VAC
Startup Current - 4VA
Standby Current - 2VA
Battery Voltage - 3.6V or higher required for
Wi-Fi connection and updates
Sensors:
Temperature
Humidity
Soli sensor (Motion Sense)
Ambient light
Nest utilizes local weather data over Wi-Fi
instead of outdoor temperature sensors
Box contents:
Display
Wiring plate
Nest Temperature Sensor (2nd gen)
Trim kit
Electrical box adapter
Mounting screws
Wire labels
Quick Start Guide
Safety and Warranty Doc
HVAC System Compatibility - Specifications
These values can be found in the Technical Information
Menu on the thermostat. (Divide VOC and VIN values by
1.414 to get the RMS voltage)
VOC- 24-42V (with or without C wire)
VIN - 24-42V (with or without C wire)
Iin - 150-300 mA (with C wire)
OR
20-300mA (without C wire present)
Display:
68 mm (2.68 in) diameter circular liquid crystal
display
600x600 pixels
PPI - 224
Size and weight:
Display:
Weight = 161.8 g / 5.7 oz
Diameter = 98 mm / 3.9"
Depth = 29 mm / 1.1"
Assembled (Display + Base):
Weight = 195 g / 6.9 oz
Diameter = 98 mm / 3.9"
Depth = 3.0 mm / 1.2"
Trim plate:
Weight = 2.3 oz / 66.5g
Width = 138 mm / 5.4"
Height = 5.5 mm / 0.2"
Length - 168mm / 6.6"
23