The 3000 can control a 2 speed primary pump, a 2 speed secondary pump ( or dual pumps single speed) , a single speed air blower ( or a fourth pump), a 12 volt spa light, an auxiliary light and an ozonator. The system comes with a calibrated pressure switch, a heavy duty 50AMPS 2 pole contactor relay, to control the 11.0KW attached dual heating elements. This product ships in approximately 1 days