Pet door with built in alarm

An alarm retrofit kit for a pet door assembly of a type having a frame with an opening defined therein, a flap for covering the opening, and an existing cover member for closing the opening, wherein the alarm retrofit kit comprises:

• i. a replacement cover member sized the same as the size of the existing cover member for covering the opening;
• ii. an alarm assembly mounted on the replacement cover member comprising a detector for detecting when the replacement cover member has been removed from covering the opening, and an alarm sound generator for generating a sound in response to the detector detecting removal of the replacement cover member;
• and
• iii. a detector element mountable on the frame of the existing pet door for being placed in the proximity of the detector when the replacement cover member is on the frame.

A method of retrofitting an existing installed pet door assembly of a type having a frame with an opening defined therein, a flap for covering the opening, and an existing cover member for closing the opening, wherein the method comprises the steps of:

• i. making a replacement cover with alarm components housed on the replacement cover, and the replacement cover sized the same as the existing cover member, so as to fit an existing installed pet door, wherein the alarm components comprise a detector for detecting when the replacement cover member has been removed from covering the opening, and an alarm sound generator for generating a sound in response to the detector detecting removal of the replacement cover member;
• ii. replacing the existing cover member with the replacement cover member;
• and
• iii. fixing a detector element to the existing pet door frame of the already installed pet door opposite where the detector is on the replacement cover member when the replacement cover member with alarm is put in place in the existing pet door.