Model FL-3000 (Upgraded from Model FL-2000) - On-Off Switch - Detachable Power Cord * Includes a Timer - Upgraded Motor - Top Lid - Helps maintain an ideal temperature for rapid growth * Sprinkler- Sprinkles water and supplies air. - Seed Trays- The Seed Trays have two different sized tabs on the bottom and top. The side with the larger sized tabs should always face upward.