Do you have got PetSafe SmartDoor, Large (up to 100 lbs)

PetSafe PPA11-10709

I too had problems with this door. It didn't always open when it was suppose to. After disassembling the door and figuring out how it was suppose to work, I realized that the switch (a little diode-like thing on the inside of the housing) is suppose to close, completing the circuit, when the door is locked. The switch is activated by a magnet in the locking flap. If the diode switch doesn't close, which happens about 50% of the time, the circuit does not close. If it does not close, it does not reset to accept another signal from your pet when it is ready to come back in or go back out.This is also ... After your pet passes through the Smart Door, the door will lock automatically The range is PetSafe PPA11-10709 adjustable up to 3 PetSafe PPA11-10709 feet The PetSafe SmartDoor allows PetSafe PPA11-10709 you to conrol the access of your pets For up to 5 pets PetSafe PPA11-10709 (one SmartKey included) Energy efficient, weather resistant seal and insulated flap ... »» Read more...

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