DESC: Geemarc Amplicall 10 Telephone Ringer and Flasher AMPLICALL10 by Sonic Alert Description The Amplicall10 Telephone Ringer and Flasher has been designed to alert you to the ring of your telephone with an extra loud adjustable ringer and extremely bright LED camera flash strobe light. You can also purchase the optional bed shaker so you dont miss those important telephone calls when you are sleeping or if you need a silent signal that the phone is ringing.