Perhaps, the Most Important Innovation in the History of Pet Doors: Revolutionary, new patented panel is strong and rigid when closed but its interlocking segments pivot so it may be rolled up into a small compartment in the stylish casing. This saves vertical space making the door easy to install in tight vertical spaces, under window sills, in external doors with transom glass, anywhere vertical space is limited. Power Pet Roll Up is the Ultimate in Quality and Performance. Manufactured by High Tech Pet Brand: World leader in smart pet door technology. Pet Collar Operated: Uses the advanced ultrasonic collar technology we’ve perfected in our MS-5 waterproof collar (included) used on our popular PX series Power Pet automatic doors. (Note: Use ONLY Recommended MS-5 Collar. Non-OEM collars may not open the door reliably.) Whisper Quiet Operation: Engineered with advanced accoustical design to make the door extremely quiet when opening and closing. Exclusive Smart Features: 1) Directional Sensing opens the door only when your pet is on a direct approach, not just wandering by. 2) Four Way Access Control lets you select from Exit Only, Enter Only, Full Access and No Access 3) Dual Entry and Exit Range Controls let You adjust individual exit and entry ranges. High Safety Level: Comes with Anti Pinch Control, High Tech Pet’s Patented Auto-retract System that Automatically Reverses the Panel if it Encounters an Obstacle When Closing. High Security Level: Secure against animal and human intruders: High Strength Polycarbonate flap is rigid when closed to resist animal intruders, only opens for your pet. Additional Heavy Duty Lock-Out panel may be used to fully secure your door when you are away from home. Weather Resistant: 100% draft free, hermetically sealed panel remains air tight even in hurricane force winds. Manual and App Control: Full control is always available from the manual control panel. And, the door may also be remotely controlled and monitored via the Smart Phone App giving these additional features 1) Remote Control from Anywhere with an Internet Connection. 2) 24/7 Exit and Entry Schedules for each day of the week. 3) Complete Activity History. 4) Real Time Notifications. A Brand You Can Trust: High Tech Pet has been manufacturing Automatic Pet Doors since 1991 and is the established leader in Smart Pet Door Technology. Our products are Engineered and Assembled in the USA with Real Time, Human Customer Support Specialists to Provide Friendly Expert Service Whenever You Need it. When the comfort and safety of your pet is at stake, chose the proven brand you can depend on, High Tech Pet. From the makers of the popular Power Pet automatic pet door, High Tech Pet introduces its revolutionary new Power Pet ROLL UP Door.