Applicable for 2-pipe and 4-pipe FCUs with 3-Speed fan coil system Compatible with On/Off relay (WT303) or 0-10V (WT304) valve control Supports intuitive 2.7-inch display, allowing for showing temperature/humidity and status of the room clearly Equipped with an external NTC sensor signal input and a dry contact input for keycard/magnet switches Adjust the room temperature manually or automatically Supports adding 8 plans and allow up to 16 schedules for each plan, ensuring various control needs and energy savings Supports open-window detection and freeze protection Supports Milesight D2D protocol to enable ultra-low latency control without gateway IP20 Rated Temperature Control Range 5°C ~ 35°C Temperature Range: -20°C ~ 60°C Humidity Range: 0% - 100% RH Operating Temperature -20°C ~ 60°C (E-ink Screen: 0°C ~ 40°C) Relative Humidity: 0 ~ 95% (Non-condensing)