Feature 1、Simple to install , no complicated wiring or cabling. Attach the door opener box. Plug and play. 2、This automatic door opener is a 2‑in‑1 design, and it can also be controlled by light or time, and can be adjusted freely. 3、Programmable time, timer setting with integrated LCD display. It opens in the morning and closes at night. Your poultry is safe. 4、Equipped with external and internal buttons, both can be operated, it is faster to use, and more convenient and beautiful. 5、Support light sensor, digital tube display, receiving signal indicator LED, setting key, adding key, reducing, learning key, test key. Item Type: Chicken Coop Automatic Door Opener Material: Aluminum Color: As shown in the picture Controller Size: Approx. 12.2x12.2x7.8cm / 4.8x4.8x3.1in Door Opener Control Rod Size: Approx.52.5cm / 20.7in Weight: Approx.3001g/105.9oz Application: Chicken house door opener, dog and other animal house door opener Remote Control Battery: 27A, 12V manganese dry battery x 1(Not included) Voltage: 100-240V Installation Notes: 1. Opening: 11 inches wide, 12 9/16 inches high, measure twice, and cut once. 2. Install the guide rails: about 11 inches apart from the inside to the inside to ensure that the door can slide. 3. Install the car door: connect the rod to the car door, and then connect the car door to the lifting rope. 4. Install the actuator rod: When the rod is extended, the distance between the two holes on the actuator rod is 29 11/16 inches. 5. Connect the wires: plug the power supply into "IN" and the actuator into "OUT". Package List 1 x Bag of Accessories(8 x Small Screw, 1 x Hex Wrench, 1 x Screwdriver, 1 x Ruler, total 11pcs) 1 x Plug Adapter 1 x String of Remote Control Key(2pcs) 2 x Strut Fittings 1 x Foldable Plate 1 x Door Opener Controller(Battery Not Included) 1 x English Manual Note 1. Please allow 1‑2in error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.