Powerplant - Heavy Duty TimerPOWERPLANT HEAVY DUTY TIMER,The only timer you can buy capable of switching upto 2 X 600W HPS or Metal Halide lamp without the need for a seperate contactor unit. These are the only timers available with a heavy duty 22 amp contactor built in to make them capable of switching heavy loads. Simply plug your ballast straight into the timer and set your on off times on the segments (each segment is 15 mins)Also the reliable safe way to switch your CFL