... + 2 bulbs(mh&hps)+ 1 yoyo + 1 timer Ballast Specs Power Output: Dimmable 50%, 75%, 100% ... , 140,000 Lumens RespectivelyCompatibility: Strikes both magnetic and digital ballasts ( ANSI Code: S51)Color Temperature: 2, ... 110,000 Lumens RespectivelyCompatibility: Strikes both magnetic and digital ballast (ANSI Code: M47)Color Temperature: 6,500KBulb ... grow light 250W HPS/MH Digital Ballast on hot selling!