Product brief
Add-A-Motor D20: specifications, fit, and tradeoffs
A mains-powered motor kit that lifts an existing vertical door by cord. It is not a complete door and needs an external timer or smart plug.
Quick answer
- Best retrofit motor: DIY retrofits with an existing slide door.
- Power: 120V AC, 19W.
- Controls: External timer or compatible switch required.
- Key fit detail: Lifts up to 10 lb; opens 25 in or more.
Editorial verdict
Useful for custom carpentry and large openings, but it is a component system rather than a ready-to-mount automatic door.
Strong points
- Works with custom door sizes and materials
- Ten-pound lift capacity
- Straightforward mechanical retrofit
Tradeoffs
- Door and timer are not included
- Requires protected mains power at the coop
Specification sheet
- Power
- 120V AC, 60Hz, 19W
- Lift capacity
- Up to 10 lb
- Opening travel
- 25 in or more
- Door included
- No
- Warranty
- 1 year listed
- Weather note
- Motor should be mounted in a protected location
- Verified
- July 18, 2026
Who should choose it
DIY retrofits with an existing slide door is the clearest use case. Before buying, translate that label into site facts: available opening or footprint, safe power, control range, weather exposure, and the person who will service it.
- The finished dimensions fit with room for full travel and service access.
- The stated power method is safe and maintainable at the installation point.
- The control method matches the required range—local, Bluetooth, or Wi-Fi.
- A manual backup can be performed quickly by another caregiver.
Before you rely on it
Read the current manual, inventory every included part, and complete the manufacturer setup sequence. Observe repeated cycles or feeding/recording events as appropriate before leaving the system unattended.
Write down the manual override or fallback, label compatible replacement power or hardware, and show another caregiver how to recover from a failure. Automation is most useful when the backup is boring and obvious.
Open the manufacturer or primary product source to check the latest manual and compatibility details.
Sources checked
Specifications were checked against these manufacturer or current retailer pages on July 18, 2026.