My bad. You are correct. The product I intended to link to was the DS-70 and DS-700 depending on the number of areas you want a light to flash in.
Check out the manufacturers site at
http://www.sonicalert.comThen click on products
Then click on doorbell signalers
These work well since you can plug in any type of light you want from a nightlight to Christmas lights to a lamp.... depending on the situation. I had a theater where the client did not want a strobe to interfere with the viewing, so I used a small string of blue Christmas lights off to the side where the rack of equipment was located. It was easy to see yet not overpowering in the dark room.
These do require a wire to the doorbell or the switch.
Hope this helps.
This message was edited by Sound Man on 12/13/04 17:26 ET.