The High Tech Pet Medium Extra-Tall Electronic Fully Automatic Patio Pet Door for Sliding Glass Doors features a directional sensing system that opens the door when your pet approaches. Dual range controls let you set both inside and outside activation distances separately, and a 4-way access control lets you select from in-only, out-only, full-access or closed-and-locked options.

• Pet door provides your pet with indoor and outdoor access. Dual range controls let you set independent inside and outside activation distances
• Directional sensing system opens the door only when your pet is approaching
• 4-way control with in-only, out-only, full-access or closed-and-locked options lets you set your pet's level of accessibility
• Automatic retract system for safety
• Ultrasonic water-resistant collar (included) will not interfere with or be affected by other electronic devices. Steel deadbolt automatically locks

Pet door provides your pet with indoor and outdoor access. Dual range controls let you set independent inside and outside activation distancesClassy High Tech Pet