15 Watt Paging System with Background Music and Loud Ringing for any Phone System The system includes 5 speakers/page horns and interfaces with virtually any telephone system to provide 15 watts of paging power - enough to drive FIFTEEN 8-ohm paging horns or speakers. Page from virtually any plain old telephone system, Centrex, PABX, digital or IP phone system. Amplified loud paging, Loud ringing, Night bell, Background music in all paging modes, Loud ringing and door chime over paging. Complete system with high quality weather resistant paging horn/speaker and power supply included. The system is LOUD and CLEAR (built in volume control can be used to adjust volume independently between paging and ringing). Connects paging from your office phones directly out to the speaker. Also allows phones to ring on speaker if desired. Designed Manufactured & Supported in the USA! Power Supply included