This is a rare bell box and will be fitted with a good quality black line in cord and can simply plug into a socket and mounted to a wall. It will simply ring on incoming calls and cut off when a phone on the system is put down. The bell box itself is not rare it is the beautiful wood grain on this one. This will be ideal with a stand alone Candlestick telephone we sell with pulse to tone unit fitted. See other listings for details or call me.