Feature: 1. TIMER MODE: Timer mode combined with manual mode is used. Timer mode is to manually set the time to open and close the chicken coop door according to the season, direction, and regular entry and exit time of the captive chickens, which is convenient and efficient. 2. EASY TO USE: Easy to program the button. Automatically turns on in the morning and off at night. This chicken coop door controller supports remote control distance mode, the obstacle control distance up to 50m/164ft (subject to weather and battery power). 3. LED DISPLAY: Automatic chicken coop door controller has a high definition LED display, which makes the time setting clear and easy with the buttons, through which you can clearly see the exact opening and closing time of the chicken coop door. 4. GUARD POULTRY: Suitable for all the right size chickens and ducks and other poultry, the chicken coop door opener is a premium chicken coop accessory, safer and stronger enough to withstand predators and guard the poultry safety. 5. DUAL POWER SUPPLY: Automatic chicken house door opener supports power or battery (not included) power supply, the battery box is used as a backup power supply to open and close the coop door in case of power failure. Specification: Item Type: Chicken Coop Door Controller Material: ABS Size: Approx. 19.5 x 10.2 x 7.2cm / 7.7 x 4.0 x 2.8in Installation Hole Distance: Approx. 18.5 x 6.5cm / 7.3 x 2.5in Control Function: Timer, Remote Control Waterproof Grade: IP44 Battery Box (Not Included): 4 x AA Batteries (Rechargeable batteries are recommended to be reusable and environmentally friendly) Note: About 9 months lifespan with regular AA batteries (actual usage time varies based on battery brand) Remote Control: 1 x 27A 12V Battery (Not Included) Remote Control Battery Lifespan: 1 Year Power Supply Mode: Choose either power supply or battery. It is not recommended to put the battery when the power supply is used, to avoid leakage of the battery for a long time. Auto Save Setting Time After Power Failure: No Application: Chickens, Ducks, Geese Gross Weight: Approx. 831g / 29.3oz. Package List: 1 x Automatic Chicken Coop Door Controller (Battery Not Included)1 x Hex Wrench 1 x Screwdriver 8 x Screws 1 x Measuring Tape 1 x User Manual 1 x Remote Control (Battery Not Included) 2 x Pulleys 2 x Screws 1 x Rope 1 x Power Adapter Note: 1. Do not mix new and old batteries. Before inserting the batteries, make sure they are inserted with correct polarity (positive Plus and negative Minus). Remove the batteries from the device and dispose of them properly. 2. If the device is not used for a long time, remove the batteries. Do not short circuit the power terminals. 3. In remote control operation, obstacles that are too large will affect the sensing.4. Manual measurement, please allow some errors.