The Model ABHW-4B audible base from Siemens Industry, Inc. consists of a standard base combined with an audible device. It is an intelligent supervised audible base which provides 6 selectable tone patterns, 2 volume levels and 2 different power types for alarm (loop power or external power) by using system configuration tool when ABHW-4B used with the FD-UL compatible detectors (refer to “Compatible fire alarm control panels”, “Compatible detector”, “Detector Placement” and “Tone and Volume Selection”). The ABHW-4B audible bases in the same device loop are fully synchronized with FD-UL detectors and also support RL-HC, RL-HW remote lamp. The ABHW-4B provides Steady, Temporal 3, Temporal 4, Temporal 4 low power, March time 120 and Canadian March time 30.
ABHW-4B is fully compatible with all Siemens addressable detectors (see Compatible detectors section) and recognizes the detector type automatically.