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Additional Smart Key. For use with the Automatic Locking Pet Sensing Door, the patented pet door that automatically unlocks its flap only when a pet with a "smart key" approaches, this unobtrusive smart key attaches to a pet's collar and transmits a coded signal that activates a spring release in the door, allowing your pet to push through the flap (its range can be adjusted from 6" to 6'). Can also be used with the Pet Sensing Doorbell. The smart key uses an included RFA-67 battery. 1 1/4" Diam. x 1 1/2" H. (1 oz.)
Item 75546 ...................
$29.95
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