The Plexidor PDE Electronic Large Wall Mount offers pets a high tech way to get in and out of the house. This pet door keeps your home safe while giving pets a convenient entrance.Give pets easy access to the yard and house with the Plexidor PDE Electronic Large Wall Mount. Each pet door comes with a collar key that weighs just 0.4 ounces, is waterproof and easily snaps onto the pet collar. The radio frequency identification device reads the pre-programmed collar key code and opens when pets approach. A sturdy ABS panel slides up and down to let pets in and out. When the pet door is inactive it acts as a security door to keep out intruders. How long the door is open can be set so there is plenty of time for pets to get in and out. This electronic door plugs into a standard household outlet or can be hardwired. This pet door can be installed into stud, brick, block and cement exterior walls up to 12 inches thick. An aluminum tunnel connects the interior and exterior frame. The tunnel is sloped to keep water from entering.