"Perfect Pet All Weather Protector Series Pet DoorsThe perfect Pet All Weather Protector Series Pet Door combines the energy efficiency of the All Weather Series with an exclusive ""Alarm System"" that alerts the homeowner when the lockout slide has been unintentionally removed. The patented unit 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. Keep children safe and intruders out with the Perfect Pet All Weather Protector Series Pet Door. This feature works when installed in doors or walls. Optional Wall Kit, sold separately.Fit Tip: Be sure to choose the correct size of pet door for your pet, by selecting the flap size that will allow them to comfortably pass through the door, without bowing or scraping their backs."
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