If you have problems hearing your telephone ringing when upstairs, in the garden, or simply because you cannot hear as well as you used to then help is at hand.
Measuring only 5 cm (2") this great little unit has a 2 port adaptor socket.
Incorporating a loud bell which rings when your phone does there is no need to ever miss a call again.
No batteries required and there is an off/on switch so that you can disable the amplifier if preferred. No wiring required, simply plug into your existing telephone socket and plug your telephone into the "new" socket.