All brand names are the registered trademarks of their respective owners.  Plexidor® is a registered trademark of Plexidor, Inc. Petsafe®, SmartDoor®, MicroLite™, and Computer Collar® are registered trademarks of Radio Systems Corporation.  Patio Pacific®, Thermosash™, and Endura™ are registered trademarks of Patio Pacific, Inc. Pet Stop®, Comfort Contacts™, Gentle Steps™, UltraElite®, UltraMax®, UltraTuff®, EcoLite®, Link® and Universal Remote Trainer® are registered trademarks of Perimeter Technologies, Inc. Pet Fence Pros®, AlabamaDogDoors.com™, AlabamaPetDoors.com™, Pet Fence Experts™, and Pet Door Experts™ are registered trademarks of McDonald Brothers, Inc.