Product Description Muliti DC Inverter type air conditioner, One outdoor unit with dual, Triple or quartered indoors units, the compressor is DC inverter with variable speed scroll compressor, adopt compressor, high efficiency, saving-energy. With CE and Rohs, UL and CSA certificates Dual split: 9000btu + 9000btu; 9000btu + 12000btu; 12000btu + 12000btu Triple split: 9000btu + 9000btu + 9000btu; 12000btu + 12000btu + 12000btu Quartered split: 9000btu x 4; 9000btu x 3 + 12000btu; 9000btu x 3 + 18000btu; 9000btu x 2 + 12000btu x 2 Cooling only or cooling & heating Optional R410a gas EER > 4.10 or SEER > 14.50 COP> 4.50 220-240/50hz@60hz Trademark: YX or OEM Standard: CE, Rohs, ISO9001, ETL, UL, CSA Productivity: 3,000,000 pcs/year