Make sure you are alerted to every telephone call. These telephone ring signalers plug directly into the telephone line then alert you when you receive a call. Choose from two styles: wall-mount or desktop. Both models can flash a plugged-in lamp to alert you. As an alternative, the wall-mount models can be used with the Add-On Strobe. This makes the wall-mount models ideal for areas where a lamp is impractical such as in small areas like hallways and dorm rooms. Choose the signaler with the right combination of features for you.