Doorbell Woes

We have one of those wireless doorbells, where the button sends a radio signal setting off the chimes plugged into an electrical outlet. It works well enough, except each time there is any power surge the chimes go off-- but it only rings once, so we know it isn't someone at the door. Trouble is that Pappy doesn't know. Blender turns on... bing-bong, WOOF! Vacuum cleaner turns on... bing-bong, WOOF!

Last night we went to bed with the dryer running. When the end-of-cycle alarm went off, it was... bzzzt, bing-bong, WOOF! Five minutes later, bzzzt, bing-bong, WOOF! Repeat.