Automate routine flock access with the Coop Defender Automatic Chicken Coop Door Kit. This complete battery-powered system combines the Coop Defender Gold opener with a lightweight aluminum door panel and metal side runners. Choose programmed times or adjustable sunlight-sensor operation to open the coop in the morning and close it in the evening.
Automatic Chicken Coop Door for Daily Convenience
An automatic door reduces the need to visit the coop at dawn and dusk every day. The controller raises and lowers the included sliding door according to the operating mode you select, helping you maintain a consistent routine whether you are home, sleeping in, or away for the evening. Compare the routines and tradeoffs in our guide to automatic versus manual chicken coop doors.
As with any automated coop equipment, check your flock and door regularly. Correct installation, clear runners, suitable settings, and routine battery checks remain important parts of flock care. For a layered approach to enclosure security, read our guide to predator-proofing a chicken coop.
Complete Aluminum Chicken Coop Door Kit
The package includes the main components needed to automate a compatible coop opening:
- Coop Defender Gold automatic door opener with integrated LCD controls
- Lightweight aluminum sliding door panel
- Metal side runners
- Heavy-duty lifting cord
- Four AA alkaline batteries
- Four wood screws for mounting
Timer and Adjustable Sunlight-Sensor Modes
Use timer mode when you want the door to open and close at specific programmed times. Use the adjustable sunlight sensor when the opener has a clear view of outdoor ambient light and you want operation to follow changing dawn and dusk conditions.
If the opener is installed inside a dark coop where it cannot reliably detect daylight, use timer mode. After programming either mode, watch several complete opening and closing cycles to confirm that the door travels freely and the schedule suits your flock.
Lightweight Aluminum Door and Metal Runners
The aluminum panel and metal runners resist the swelling and warping sometimes associated with wood in wet conditions. The lightweight panel is designed to stay within the opener’s maximum lifting capacity while providing a practical sliding door for backyard poultry.
The opening measures approximately 9 inches wide x 12 inches high, a suitable size for most chickens and ducks. The side runners are approximately 24 inches tall, and the door panel weighs less than 2 pounds.
How to Install the Automatic Chicken Door
Before cutting or modifying your structure, review our beginner’s guide to planning a chicken coop and run.
- Choose a flat, vertical mounting surface with enough clear space for the panel to travel above the coop opening.
- Mount the side runners straight, level, and parallel so the aluminum panel slides without binding.
- Center the opener above the door and attach the lifting cord to the panel.
- Insert the four included AA alkaline batteries and select timer or sunlight-sensor operation.
- Run several supervised test cycles and adjust the runners, cord, or settings if necessary.
Keep bedding, mud, ice, and other debris away from the runners and the bottom of the opening. The door must travel freely for dependable operation.
Aluminum or Wood Door Kit?
Choose this aluminum version when you want a lightweight metal panel and metal runners that will not swell like wood in damp conditions. If you prefer a traditional wood appearance, consider the ChickenGuard PRO automatic door opener with oak wood door kit.
Product Specifications
- Product: Complete automatic chicken coop door opener and aluminum door kit
- Control options: Programmable timer or adjustable sunlight sensor
- Display: Integrated LCD
- Power: Four AA alkaline batteries, included
- Battery alert: Low-battery warning
- Approximate opening: 9 inches wide x 12 inches high
- Approximate runner height: 24 inches
- Maximum door lifting capacity: 2 pounds
- Lifting-cord breaking strength: 50 pounds
- Suitable poultry: Most chickens and ducks
- Warranty: One-year limited warranty
- Support: U.S.-based customer support
- SKU: CDMDK
Routine Care and Troubleshooting
Inspect the runners and lifting cord regularly, keep the travel path clear, and replace depleted batteries promptly. If the door does not open or close correctly, first check for debris, ice, bedding, a misaligned runner, or a tangled cord. Then follow the reset and programming steps in the product instructions before returning the door to automatic use.
Download the Coop Defender instructions and troubleshooting guide.
Installation Video
If you have questions during installation, contact My Favorite Chicken for local U.S. support.
Automatic Chicken Coop Door Kit: Frequently Asked Questions
What is included with the Coop Defender automatic chicken coop door kit?
The kit includes the Coop Defender Gold opener with LCD controls, an aluminum sliding door panel, metal side runners, a lifting cord, four AA alkaline batteries, and four wood screws for mounting.
Does the automatic chicken coop door require electricity or Wi-Fi?
No electrical outlet, hardwiring, or Wi-Fi connection is required. The opener runs on four included AA alkaline batteries and is programmed through its integrated LCD controls.
Can I use both a timer and the sunlight sensor?
The opener can operate from programmed opening and closing times or from its adjustable sunlight sensor. Select the mode that best matches the installation location and your flock's routine.
What size is the aluminum chicken coop door opening?
The opening is approximately 9 inches wide by 12 inches high and is suitable for most chickens and ducks. Measure your coop opening and available vertical travel space before installation.
Can the opener be installed inside a dark chicken coop?
It can be installed where the door and cord travel freely, but the sunlight sensor needs a reliable view of ambient daylight. Use timer mode if the installation location is too dark for consistent light-sensor operation.
Why choose an aluminum door instead of a wood door?
The lightweight aluminum panel and metal runners resist the swelling and warping sometimes associated with wood in damp conditions. Choose a compatible wood-door kit if you prefer a traditional wood appearance.
What should I check if the automatic door does not move correctly?
Check the runners and opening for bedding, mud, ice, or other debris. Also inspect the lifting cord, runner alignment, and batteries, then follow the reset and programming instructions in the product manual.
Does an automatic chicken coop door make a coop predator-proof?
No single door can make every coop predator-proof. An automatic door can help maintain a consistent closing routine, but secure installation, strong coop construction, suitable settings, and regular flock checks are still essential.

