Whether you're hard of hearing or just unable to hear the phone in certain areas of your home, amplifying the ring tone can be helpful in letting you know that someone is trying to reach you. The Extra-Loud Telephone Ringer Amp is a small, portable device that notifies a user of an incoming phone call with a ring up to 95 decibels.With its compact, portable design, the Extra-Loud Telephone Ringer Amp can be taken along to the office, to other areas of the house, or while traveling. A bright ring indicator will even provide a visual alert to telephone calls. The Extra-Loud Telephone Ringer Amp is easy to use. Connect your incoming telephone line and your telephone to the unit, and you'll be able to adjust both the ring volume and the tone. No external power source is required.