Cat Mate 254 Electronic Cat Door

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  • Prevents stray cats and other unwanted critters from entering the house
  • Installs in interior or exterior materials 0-2” thick
  • Includes two magnetic collar keys for door access
  • Operation requires a 9-volt battery (not included)
  • Features a manual four-way locking system

The Cat Mate 254, also known as the Cat Mate Electromagnetic cat flap, is an affordable and reliable solution for giving your cat the freedom to go in and out of the house while keeping out unwanted critters or other neighborhood cats. We provide you with two magnetic collar keys for your cat's collar upon purchase. This door is a great solution for active indoor-outdoor pets.

How It Works:

This microchip cat flap features a rotary four-way locking function. This means you can set the door to completely locked or unlocked for both inside and outside, allow access outside but not back inside afterward, or your pet can use the collar key magnets to re-enter the door from the outside. When your pet wants to enter the house from the outside, the door senses the magnetic collar key and unlocks, allowing them to push through the flap. This means that no animal without a magnet can enter your house from the outside, preventing strays or other small critters from getting inside.

Note: There is a third sliding lock mounted in the bottom center of the pet door which locks the solenoid. The solenoid is the colored (green and red) portion inside the base of the pet door that controls the electronic motion of the flap. Make sure this is unlocked to ensure proper flap functioning.

Features and Benefits:

  • Rigid acrylic flap is lined with brush weatherstripping to prevent wind from entering and energy loss
  • Sturdy construction designed to keep out most strays and smaller rodents
  • Easy to train cats to use
  • Waterproof magnetic closure
  • Does not require the use of any electricity
  • Four-way lock gives you more control over your pet’s access to and from the house
  • Three-year warranty

Size Chart

Flap SizeFlap DimensionRough Cut OutOutside Frame Dimension
Cat Flap 2545 3/4" w x 5 3/4" h6 5/8" w x 8 1/2" h7 5/8" x 9 1/2"


Important note: There is a third slide lock mounted in the bottom center of the pet door which locks the solenoid. However, several customers have misinterpreted its function, left the solenoid locked and thought that the pet door was malfunctioning. This is actually a handy feature to use in training.

If you are interested in purchasing a similar but larger version of this product, check out the Cat Mate 363.


Cat Mate/ Dog Mate/ Ani Mate 3 Year Limited Warranty

Guarantees your purchase for a period of three years from the date of original purchase against any defect arising due to faulty materials or manufacture. Accordingly, any defective item will be repaired free of charge or replaced at the manufacturer’s option provided that the defect has not been caused by neglect, misuse, or normal wear and tear and proof of purchase date is supplied. Your statutory rights are not affected.

Additional Information

Frame Material


Flap Material


Flap Colors


Flap Thickness


Warranty Period

3 years

Return Period

30 days

Door Open Type

Unlocks for the key signal and pet pushes open

Flap Type

Single Flap

Your Maximum Pet Size

Cats, Large Cats

Controls Access

From Outside Only

# Collar Keys Included


Operates On


Flap Opens

Pet Must Push

Flap Design

Single, One Part, Rigid, Thin Flap

Can Be Installed In

Hollow Core Door, Polycarbonate, Plywood or Other Thin Material, Solid Core Door

Additional Lock

4-Way Lock

Number Pets


Activated By


Installation Instructions

Please Note: If you intend to do a reverse installation, which would yield magnet control from the inside rather than the outside, the warranty will be voided.

Prior to starting the installation:

Make sure that the bottom of the template is about level with your pet’s stomach. You can place it lower if you would like. If you choose to place it lower, make sure that it is not too low that it compromises the structural soundness of the door/panel or forces your pet to stoop when in use. Ideally you would like the door to be placed so that as the pet is going through, the magnet comes in very close contact with the bottom of the door. This way the collar key will properly trigger the unlocking mechanism.

For Wooden Doors and Plastic Panels:

Step 1: Place the template in the desired position on the door and trace completely around it.

Step 2: Prior to cutting the hole, drill two holes ¼” in diameter in the top corners.

Step 3: Use an electric jig-saw to cut along the inside of the line you previously traced. Make sure to cut the hole square to the door, especially if you have a thicker door. Ensure that the frames are free-fitting in the hole.

For Panels 0 - 7/8” Thick:

Step 1: Position the interior frame on the inside of the door and mark the four screw positions.

Step 2: Remove the frame and drill the screw clearance holes in the panel to 3/16” in diameter.

Step 3: Select the appropriate screws for the panel in your door. (See Figure 8 on the template).

Step 4: Using the appropriate screws and working from the inside of the house, tighten the interior frame to the exterior frame. Cover the screw heads with the supplied caps.

For Panels 7/8 - 2”:

Step 1: Screw the interior frame to the inside of the panel with short ½” screws.

Step 2: Drill out the four screw holes in the exterior frame to allow close clearance on the screw. A 3/16” in diameter drill is recommended.

Step 3: Fit the exterior frame to the exterior of the door using ¾” screws. Cover the screws heads with the supplied caps.

For Walls:

After making an appropriately-sized hole in your wall, line with ¾” plywood or similar material (Figure 10 on the template). This provides a tunnel to for the installation and accepts the fixing screws.


Is the flap clear?

You can see through it, but it does have a dark tint.

Will this protect against raccoons?

This door is not recommended for protection against raccoons. It does work well for strays and rodents.

Can I install this in a wall?

You can, however the installation would be very tricky as the trim frame mounts around the flap frame. We recommend this as a through-door installation only.

Will the 254 keep pets in?

No, this door only controls who comes in not who goes out. If you did need one that controlled both inside and outside take a look at the Cat-Mate 305.

How energy efficient is this door?

Since it does have a lock, it won't blow open like other non electronic pet doors. Also the brush weatherstripping around the flap helps with insulation.

How large is the collar key?

It is about the size of a small marble, and pretty light weight.

How does the door unlock?

The collar key must pass very close to the bottom of the pet door frame. As it brushes over the locks in the pet door retract, allowing the cat to push through. Then the locks pop back up securing the flap.

Does the door and collars need batteries?

The door does run off of a 9-volt. The collars are just magnets so they do not need any batteries.

Can I plug the door into an outlet?

No, there is no plug in adapter available.

Are replacements for the keys available?

Yes, we carry Extra Cat MAte magnetic collar keys.

What is the largest dog mate electronic dog door?

The Dog Mate/Cat Mate company makes a Cat Mate 363 Electronic Pet Door with a flap size of 7"w x 7 1/4"h. It should be ok for smaller dogs, but you will need to measure your dog for a proper fit. It is the largest electronic door they make.

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