NC150N Module with 8 Lamps+TB Requires PK152 Power Supply and SS106 Transformer-Includes NC150N Module - Less RP021CM'S. The Alpha Communications TekTone NC150/08 audio-visual nurse-call system is designed for health-care applications where voice communication and visual indication is required. The NC150/08 system can support only a single master station per system. When a remote station is activated, the NC150/08 annunciator will sound an electronic tone and will light, indicating the location of the call. The tone signal can be silenced at the master station (and/or at the optional LI150B remote duty station(s) for nonemergency calls). The individual switch/light will remain lighted until the remote station is reset at the point of origination, or when answered by voice from the master station (for remotes with voice capability only).