Solar Powered Automatic Chicken Coop Door Auto Chicken Door Opener with Light Sensor Timer Remote Control Blue Item Type: Automatic Chicken Coop Door Material: Iron Sheet Metal, Plastic Weight: Approx. 2507g / 5.5lb Applicable Object: Chicken, Duck, Goose Coop Door Size: Approx. 37.3x24.7cm / 14.7x9.7in Coop Door Open Size: Approx. 28.5x20.5cm / 11.2x8.1in Controller Size: Approx. 11.2x10.2x3.5cm / 4.4x4.0x1.4in Including Hook Height: 11.6cm / 4.6in Hook Hole Inner Diameter Size: Approx. 12x11cm / 4.7x4.3in Controller Battery (Delivered Without Battery): AA Dry Battery Or 3 x LR06 Alkaline Model Battery Remote Control Battery (Shipped Without Battery): 1 x Button Battery, CR2025 Model Solar Panel Battery (Shipped With Built In Battery): 18650 Model, Lithium Ion Battery, 1200mAh Power Supply Method For Chicken Coop Door: Choose Either AA Battery Or Solar Panel Power Supply Control Function: Light Sense, Timing, Remote Control Remarks: Screwdriver Style Is Random