Black Box Black Box Network Services FM060 Extra-Loud Phone Ringer

Use this extra-loud supplemental phone ringer in noisy areas where you can't hear the phone ring, such as on shop floors or garages. Plugs into an ordinary RJ-11 jack. FeaturesExtra-Loud Phone RingerFeatures an on/off switch and simple mechanical bell constructionPulls enough power from the phone line to provide a 65 75 dB ringSpecificationsWeight: 0.25 lbs