... additionally, you can use iPhone to control the unit, just install a programme in your moble phone ... unit can save more 3/4 eletricity power for your family each month .FEATURES1) Design based on the French Standard ... every unit before pacage in the factory. CERTIFICATIONSCE, CB, EC, ETL, CETL, C-TICK, WATER MARK, STANDARD MARK ... , ETL, CETL, C-TICK, WATER MARK, STANDARD MARK, UL, SABS, SANS, SAA, SASO)