The PlexiDor Performance Pet Doors Electronic Automatic Wall Mounted Dog and Cat Door, Large gives your furry friend his very own key to the kingdom! This state-of-the-art door uses a sensor and a coded key that snaps onto your pet’s collar to automatically open and close the door—and will only open for your pal! You can set and change the code easily with one-touch programming, and the lightweight collar key doesn’t require batteries. A hardened ABS panel slides up and down just like a garage door and will not close if it is obstructed—a safer choice for both kids and pet pals. It can be installed into many common types of walls and features a rust-proof aluminum tunnel that connects the inner and outer frames. And for extra security, the door stays locked with a stainless steel deadbolt when it’s not in use. This super-convenient and secure door can be installed on any standard door and can be used right out of the box—just plug it into an outlet! This dog and cat door can be used by all feline friends and canine companions who weigh up to 125 pounds.