1.for room temperature control in 2-pipes and 4-pipes FCU air conditioning systems 2. 3-speed ... manual adjustment selecatable2.LCD displays working status such as room temperature ,set point ,fan speed etc. Makes ... return back the set point in accupancy.Except for digital thermostats, Bacnet thermostats, we also have humidity controllers ... , please feel free to contact me. digital FCU thermostat