HTW-WF11-FC 2/4-*B series BACnet fan coil thermostat is designed to control 4 pipe Fan Coil Unit system,with outputs of 3 fan speed and 1 cooling valve and 1 heating valve, with remote setback(keycard) input andModbus communication. It is widely used in these environment like Homes, Residential buildings, Schools,Hotels, Hospitals, Offices and etc. to main an ideal room temperature purpose.