This ACSON ceiling cassette air conditioner provides cooling for both residential and commercial spaces. It's an inverter type, offering energy efficiency and consistent temperature control. Available in capacities ranging from 2HP to 3HP, making it suitable for different room sizes. It utilizes R32 refrigerant, which is more environmentally friendly than older refrigerants. The inclusion of WIFI connectivity enables remote control and monitoring via a smartphone app. The model numbers A3CKY20FF, A3CKY25FF, A3CKY30FF, and A3CKY28FF likely represent different horsepower/BTU variations within the same product family.