Medium, For pets up to 30 lbs., Fully automatic, motor driven & opens all by itself when activated by your pet's ultrasonic collar.
- Battery powered pet doors requires 4 D Cell batteries, not included
- Activation via Smart Key ranges from 6 inches to 3 feet and can be easily adjusted by pet owner
- Smart Key conveniently fits on pet's everyday collar and only weighs .64 ounces
- Model: Small PPA11-10711, Large PPA11-10709