... ) HIgh efficiency compressor with R410A refrigerant6) Flow switch for water flow protection7) Intelligent controller and adjustment by quick-mind microprocessor8 ... pacage in the factory. CERTIFICATIONSCE, CB, EC, ETL, CETL, C-TICK, WATER MARK, STANDARD MARK, UL, SABS, SANS, SAA, SASO, VDE ... MACON swimming pool heater(CE, CB, EC, ETL, CETL, C-TICK, WATER MARK, STANDARD MARK, UL, SABS, SANS, SAA, SASO)