SPL 1000 STCOT 1000w 600w 400w watt 8-Plug Grow Light Controller System Without Timer 110 / 240 Volt Digital Dimmable HPS MH System This controller will run eight (8) HID lights at 240 Volts. Easy to follow instructions & makes installation simple. Multi-tap universal outlets will take a 120 Volt or 240 Volt ballast cord set