This has precious little to do with ham radio but the blind mice mega mall 
is selling for about 25 dollars per unit, a weather proof wireless door 
bell.  We have a front door and a side door in need of some alert so I put 
the single battery, which was included, in the outdoor weather proof button, 
and 3 double A batteries, not included, inside the bell box which, they 
claim, will receive the door bell signal for 250 feet.  Boy, I hope my 
neighbor doesn't get on the same frequency because I saw no place to change 
channels.  Anyhow, for the price, I thought wireless hams would like to know 
that the wireless door bells work fine.

Phil.
K0NX