Doormate Automatic Patio Door with Pet Proximity Sensor

Doormate.com makes an automatic patio door opener aimed at the elderly and people with special needs. The unit is pushbutton controlled (keychain) or activated through the optional, mountable numeric keypad for secure entrance. Once open, the Doormate slides the door closed after a short delay. Aside from the obvious practical benefit for people with special physical needs, the most interesting accessory is the 'Pet Prox' proximity device that clips on to your dog's collar. The device is triggered as the dog comes within a few feet of the Doormate- from either inside or out. This should be a welcome addition to the home for anyone that has a dog with a small bladder or frequent, obsessive hankerings for grass.

Doormate system and Pet Prox add-on available from Smarthome.com.