Nest Thermostat

Nest Learning Thermostat Physical & Display • Diameter: 3.27 inches • Screen size: 1.76 inches (likely a circular LCD) Connectivity • Wi-Fi: Supported • 802.15.4 (Zigbee-like) protocol: Supported for communication with Nest sensors/hubs Power & HVAC Compatibility • 24 V systems: Supported • Works on forced-air, radiant, and heat pump systems (both oil and gas, electric, hybrid systems) • Supports systems with 1-stage cooling and 1–2 stage heating • Does not support multi-zone systems or more advanced multi-stage HVAC configurations Features & Functionality • Self-learning: Learns your schedule and temperature preferences over time • Auto-Away: Reduces energy usage when it senses no one is home • Energy History, Auto-Schedule, Nest Leaf, and Time to Temperature: Provides insights and energy-saving suggestions   . • Basic integration with the Nest ecosystem (e.g., with Nest Protect or Nest Cams) and controlled via the Nest app or directly on the device (1st Gen) Summary Table Feature Specification / Detail Release Q4 2011 (rev Q1 2012) Size (Diameter) 3.27 in Screen 1.76 in LCD display Connectivity Wi-Fi, 802.15.4 (Nest protocol) HVAC Compatibility 24 V systems; 1-stage cooling; 1–2 stage heating; forced air, radiant, heat pump, oil, gas, electric, hybrid Smart Features Learning, Auto-Away, Energy History, Auto-Schedule, Nest Leaf, Time to Temp Control Options