Multiple Working Modes: There are multiple working modes and various wiring methods available. Optional functions include single-wire control (valve stops while the fan does not stop) or two-wire control (valve stops and the fan stops). External Embedded Installation: Designed for external embedded installation with a standard 86-type installation cassette for easy installation. Long Service Life: Thermostat rated for over 100,000 cycles at 220V full load, and the manual switch rated over 60,000 cycles. Stable Performance: Attractive appearance and comfortable hand feel, with reliable operation. The temperature sensing component uses an accurate metal bellows. Applications and scenarios: - Bathroom exhaust ventilation: coordinates damper valve and fan to manage airflow based on setpoint, improving comfort and efficiency. - Kitchen, workshop, or utility room ventilation: automatic damper and fan control to maintain proper airflow and energy efficiency. - Small living or working spaces: reliable, easy-to-install thermostat with a standard 86 cassette for convenient mounting.