Feature: 1. Large hinged door size, 12 inches wide and 12.5 inches high., suitable for most chicken and duck. 2. Easy to install, no complicated wiring or cabling is required. Install the door opener, plug and play. 3. Simple to use, automatically opens in the morning and closes at night, your poultry is safe. 4. High quality heavy duty aluminum alloy door and linear actuator arm, effectively ensures safety. 5. Automatic chicken house door opener is reliable and dependable in keeping your poultry safe day and night. Specification: Condition: 100% Brand New Item Type: Door Opener Material: Aluminum Alloy Input: 110V-220V Motor Voltage: 12VDC Power: 66W Motor Moving Speeds: 5MM/s Environmental Conditions: -30℃ to 55℃ Protection Level: IP44 Size: As Shown in Picture Weight: Approx. 2986g / 105.3oz. Package List: 1 x Controller Box1 x Linear Actuator1 x Power Adapter1 x Aluminium Door2 x Aluminium Sliding Rail1 x User Manual2 x Remote Control1 x 1.5m Tape Measure10 x Screw Note: High quality heavy duty aluminum alloy door and linear actuator arm. Black bear can't even lift the door.Please place the photosensitive head naturally outdoors to detect day or night, andthe door can be opened or closed (The infrared light must be dark, otherwise it is detected that an object is obstructed and the door cannot be closed).