Add-A-Motor - Chicken Coop Automatic Door Accessory Motor - Model D20-120V CUSTOMIZABLE - Heavy duty motor adapts to your coop, connects to any type chicken coop door (wood, metal, or plastic) to make it "automatic" POWERFUL MOTOR - No counter-weight needed. Motor can lift and lower a door up to 10 pounds, with door openings up to 25 inches or more SAFETY FEATURE - Included safe connector prevents damage if door is frozen closed or jammed and closes slowly to prevent injury to poultry EASY SET UP - Installs in about 15 minutes. No Complicated Programming. Simply rotate a dial to set how high and low to reel your door INCLUDES - Motor, mounting hardware, universal door connector, AC power adapter, and illustrated instructions. Works like a reversible motorized fishing reel