Using the energy efficient All Weather frame and flap design the Protector series lock-out slide offers an important Exclusive accessory. The Perfect Pet Protector Series All Weather Pet Dog Door has an on/off switch to activate the audible ALARM to alert you that the interior slide has been even just partially removed. This is important for those who wish to know immediately that there is an attempt to exit as well as enter the pet door. This feature works when installed in doors or walls.
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