Maid's Bell & Room Indicator

Julie will throttle me one day for this. I bought a maid's-bell and indicator-board on ebay for A$30. I've installed it in the kitchen, and have run wires to switches in four rooms, so I can call for a maid from the bedroom or lounge! The bell is yet to be wired in place, but the indicator board is up on the wall. When a call is made from one of the rooms, a tell-tale drops down into one of four windows displayed on the indicator panel. The maid will then know to come to "room 1" -- the lounge for instance.

....unfotunately there is no maid, so this is just meant to be for fun -- although Julie is a bit worried about having any such system in the house!