... outdoor fan speed,electric heater,compressor,valve, sweep etc. a. Low cost b. Apply 8 bit microcomputer of NEC ... or Toshiba to main board c. Apply 4 bit microcomputer & LCD to remote control ... d. The precision of temperature control <=1°C e. The display is the LEDs or the double ... overload,over voltage,over pressure protection etc. Controller for floor-stand type A.C.