The in.ye-5 supports 5 configurable outputs, a 4kW heater and a standard 12Vdc light. Ideal for entry level to mid-range spas with pump 1 with 1 or 2 speeds, pump 2 with 1 or 2 speed, blower or circ. pump or ozonator. Direct connection for Audio available.Works with keypads in.k200, in.k300, in.k8, in.k450, in.k600 static, in.k120 (auxiliary) and in.touch 2 or 3/3+.