Numbers and Titles



Includespaging, public address, sound masking, and intercommunications systems that service all or part of a facility.
See11 20 00 for commercial equipment. 11 28 00 for office equipment. 11 30 00 for residential equipment. 11 50 00 for educational equipment. 11 52 00 for audio-visual equipment. 11 70 00 for healthcare equipment. 27 15 00 for paging communications horizontal cabling. 27 40 00 for audio-video communications.
27 51 13Paging Systems
27 51 16Public Address Systems
27 51 19Sound Masking Systems
27 51 23Intercommunications and Program Systems
27 51 26Assistive Listening Systems
27 51 29Emergency Communications Systems
27 51 33Occupancy Indicator