Plug In Telephone Ringer Amplifier

A compact 50mm (2") diameter ringer amplifier, complete with 2-port adapter socket. The smart white unit houses a loud bell which will ring every time your phone does. Needs no batteries and has an on-off switch so that you can bypass the amplifier if desired. No wiring required - comes complete for instant plug-in operation - simply unplug telephone from socket, plug the ringer amplifier in its place and then plug the telephone back into the socket.