$

System Compatibility: Works with most 24V residential HVAC systems, including gas, oil, electric, and dual-fuel. Supports up to 3 Heat / 2 Cool stages.Power Requirements: Requires a C-wire or the included Power Extender Kit (PEK) for homes without a common wire.Smart Home Integration: The most versatile thermostat for ecosystems; fully compatible with Apple HomeKit, Amazon Alexa, Google Assistant, and Samsung SmartThings.Connectivity: Dual-band Wi-Fi (2.4GHz/5GHz) and Bluetooth 5.0 for stable remote access via the ecobee app.