PetSafe® Electronic SmartDoor™- Large

PPA11-10709 Our innovative Electronic SmartDoor™ gives your pet a key to the house so he can come and go as he pleases. Using radio-frequency technology, the SmartDoor™ reads the unique signal of a SmartKey™ worn on your pet's collar and triggers the battery power-driven flap to unlock. When the SmartDoor™ no longer senses your pet's SmartKey™, the flap automatically locks back into place. WARNING Small children can pass through door. Read Entire Statement Door cut-out dimensions chart Click Here» Features New and improved design 3 programmable modes: Automatic, Locked and Unlocked One programmed SmartKey™ and battery included Easily program up to 5 SmartKeys™ with a touch of a button Energy efficient insulated flap with UV sun protection  Uses 4 D-cell batteries, not included Low battery indicator How to Prepare, Install, Set and Operate with helpful tips included in Operation Guide Color: white Fits door thickness 1 1/2" to 2" (3.8 cm to 5 cm) Outer frame dimensions: 16-1/8"w x 23-5