spa control system: 1.CE.FCC,ROHS EUROPE and USA STANDARD. 2. ... keys.12,Board computer function key lock.13,Three-phase or single phase, optional 110-120VAC or 220-240VAC.14,When the ... synchronous AC power output for DVD or TV15,Three power control mode.Electric parameters(1) Performance indexRated voltage 220VAC/50Hz. Maximum ... Output Power 20W 3) Speaker 8Ωdamp proof speaker spa control system