... air conditioner,controller air conditioner,Auto control cabinet air conditioner1.DC48V air conditioner, ... conditioner,DC air conditioner2.DC 48V motor , fan , compressor air conditioner ,DC48vcontroller3.new product ... & User Munual)Bilingual(EN&CHN)External Fan Control - EmergencyYesExternal Fan Control - Free CoolingYesExternal Fan Control - Hydrogen DischargingYesExternal Air Conditioner On/Off ...