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LARGE PetSafe SmartDoor


Ships factory direct, usually the same business day.

Code: 3721
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NOTE: We recommend measuring your dog to ensure they can fit through the door opening.

If you have ever worried about the security of a pet door or had a problem with wild animals, or even your neighbor's dog getting into your home, you need a PetSafe smart door -- it uses innovative technology to insure that only the animals that you want to give access to your home are able to get in or out.

How It Works:

The PetSafe Smart Door recognizes the SmartKey tag on your dog's collar and unlocks the pet door. After your dog has passed through, it re-locks itself automatically. Additional keys are available separately for up to 5 dogs total. Available in SMALL or LARGE.

Includes 1 Smart Key.


  • Detection range adjustable up to 3 ft.
  • Plexiglas flap with locks in both directions
  • System can identify up to 5 Smart Keys
  • 3 easy-to-set entry modes: locked, unlocked, and automatic access
  • Energy efficient, weather-resistant seal and insulated flap
  • Uses 4 D-cell batteries (not included)
  • Fits door thickness 1 1/2" to 2"
  • Lifetime limited manufacturer's warranty

    LARGE Dimensions: 17 3/8" x 25" -- Great for dogs up to 100 lbs.
    LARGE Flap Opening Dimensions: 13 1/16" x 15 3/4"

    The PetSafe Smart Door is Easy to Install:

    Begin by removing the door from its hinges. Now set your door on a raised work space (we recommend saw horses). Note the top and bottom of the door before cutting. You can install your pet door anywhere within the door.

    You will need to measure the height of your dog. Measure from the floor to the top of your dog's shoulders. Mark the shoulder height on the door. If you have a raised panel door, after you have cut out your door opening, you have the option of building up the lower area with wood strips to make the surface even and support the frame. There is a shoulder height line provided on the door template. Align this with the mark that you just made on your door. You will need to leave at least three inches from the bottom of your door to the bottom of the hole you will cut for your pet door.

    Once you have determined the location for your pet door, tape your template into place. Using a 3/8 drill bit, drill out the circles in each of the corners of your template. Beginning in one of the four corner holes that you have just drilled, use an appropriate cutting tool to cut along the template lines. Once you have finished cutting the hole, clean off your door, including the excess template. Take your smart door and separate the interior and exterior pieces. Remove the battery box cover from the front of your smart door. Take out the hardware and set it aside. This is a good time to install the four D cell batteries and replace the battery box cover.

    Place the interior of the smart door into the hole. Now place the exterior side of the door into place and snap the two sides together. Screw the two sides together using the holes provided. If a range knob is provided in your hardware, install it now.

    The installation of your smart door is now complete, and you can program your smart door to recognize each Smart Key.

  • Country of Origin: Made in China.

    Download Owner's Manual for PetSafe Large SmartDoor

    sizing-chartOwner's Manual for PetSafe Large SmartDoor

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    LARGE PetSafe SmartDoor
    Item # 3721

    Ships factory direct, usually the same business day.Free Shipping (US only)

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