The PAC-ZC40L-E Zone Controller brings to fruition expanded functionality and interaction to realise even greater energy savings. With the ability to control up to 4 zones, and equipped with Intuitve Airflow Control and three built in sensor functions (temperature, occupancy, brightness), the PAC-ZC40L-E Zone Controller brings intuitive, yet simple control to a whole new level. The PAC-ZC40L-E Zone Controller is compatible with 24V dampers only.