Universal Air conditioner control system QD-U03C+ is always used to control air conditioner system and heat pump system Feature : 1、5 Working Modes 2、3 Fan Speed 3、Accurate And Stable Temperature Control 4、Accurate And Stable Auto Fan 5、Auto-restart Function 6、Double Sensors 7、Timer on/off 8、Sleep Function 9、Defrost Automatically 10、Outdoor Fan is Controlled Independently 11、Compressor Project Timer For Its Run And Stop 12、Prevent Cold Wind In Heating Mode 13、updated reciever,good looking appearance,