The Smart Pet Doorbell could turn your dog's whimpering and scratching at the door into your dog sitting patiently and waiting for the door to be opened for him. Your door will thank you.

The device, installed near the door, can sense when your dog wants in via a sensor you can attach on up to five pets' collars.When Fido comes close, the sensor makes a doorbell ring. The unit uses three C batteries, has adjustable volume, and has a detectable range of up to 15 feet. Of course, if your pooches run around near the door, the sensor may drive you nuts. And hopefully, the sound of the doorbell won't make your dog go all yappy.

The Smart Pet Doorbell sells for around $79.99.