HTW-WF11-FC-MKN series fan coil thermostat is designed to control 2 pipe Fan Coil Unit system, withoutputs of 3 fan speed and 1modulating 0-10V valve, with keycard, with Modbuscommunication. It is widely used in these environments likeHomes, Residential buildings, Schools, Hotels,Hospitals, Offices and etc. to main an ideal room temperature purpose.