The Libra+ Flashing Chime can be used as a normal door bell but what's especially great is that you can attach it to your telephone! When your phone rings, the door chime will be activated so you'll never miss a call again - it's wonderful! There are six great chimes to choose from too, so you don't have to put up with one that annoys you. It's such a clever gadget and we know you'll love it.