The SD505-6SB adds an audible output function to the IntelliKnight SD505-APS, SD505-AIS, or SD505-AHS addressable detectors. The SD505-6SB can be used as a single station, multi-station or as a system sounder. These powerful capabilities make the SD505-6SB ideal for use in hotels, apartments and dormitories where in room sounders are required. The sounder base is controlled by the same address as the detector it is mounted with, this saves SLC addresses and makes installation and programming easy.