The Serene RingMaster Super Loud Phone Ringer and Flasher alerts you to the ringing of the telephone with an adjustable super loud volume (up to 95dB) ringer. Customize ring patterns and tones to suit your individual hearing abilities. Features a bright visible ringer for visual alert of ringing phone.

Bed-shaker ready (shaker sold separately) to alert even the deepest sleepers. Desk or wall mountable. AC adapter (included) with battery back-up (batteries not included.) One-year warranty.