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