7000 / 9000BTUSelf-evaporative system.Over-cold protection, threeminutes restart delay function.Defrosting function undercooling mode.Self-diagnosis function and24 hours timerSelf-evaporative system.Over-cold protection, threeminutes restart delay function.Defrosting function undercooling mode.Self-diagnosis function and24 hours timer7000 / 9000BTUSK-SKY3A9000BTUAuto closing air outletWifi function optional12000BTUDouble motors, quick coolingIPX24 suitable for outdoor useWifi function optionalSK-SKY7A14000BTUWifi function optional3 in 1 Cooling/Fan/DehumidifyingHeating function optional.Refrigerant: R410A/R290EER: Class ARemote control & LED displayTwo drain pipes, separatedrain pipe for humidification3 in 1 Cooling/Fan/DehumidifyingHeating function optional.Refrigerant: R410A/R290EER: Class ARemote control & LED display