This device\'s amplified ring can be set as high as 120 decibels and the strobe light is sure to get attention. Great for anyone who does not want to miss another phone call. The Krown RA-05 amplified ringer with strobe light, monitors your phone line for incoming calls. When receiving a call, it will alert you with a 120 dB amplified ringer and bright flashing strobe light. This is wall mountable. Plugs directly into your phone\'s jack. 3 AA batteries required for backup, not included. Box dimensions: 4.75"H x 3"W x 1.5"D.