High pressure sodium (HPS) industrial type high bay light. Ballast circuit mounted in a metal enclosure, 3 bulbs all work, 2 aluminum dome hoods. You can have 400 watt bulbs or less with this ballast. This type of light is commonly used for flowering flowers as the light is more in the red spectrum. complete wired and ready to go. plugs into common 120V household outlet. can be used with a timer (timer not included). Gives dank buddy. If interested I can provide pics and specs or whatever. Good deal here, one of the hoods cost more than this entire setup.