The CH7100 is a premium 4.3-inch TFT high-resolution touch screen thermostat designed for advanced HVAC management. It offers a seamless interface for precise control of multi-stage heating and cooling systems in both residential and commercial settings. Item No.: CH7100 Universal Compatibility: Works with conventional 2H/2C and Heat Pump systems up to 3H/2C, including support for Aux/Emergency heat. Dual-Fuel Support: Perfectly compatible with hybrid systems using oil, gas, or electric fuel sources. IoT Ecosystem: Fully integrated with Amazon Alexa and Google Assistant for intuitive voice control. Remote Mobility: Monitor and control your home comfort anywhere via the free Smart Life app for Android and iOS. Visual Feedback: Features a vibrant 4.3" Capacitive Touchscreen with a background that turns blue or red to indicate current system status. C-Wire Powered: Requires a 24V C-wire to ensure stable WiFi connectivity and consistent high-res display performance.