The B501BH-3 sounder base is used with Notifier intelligent detectors.The sounder base is capable of producing either the distinctive three-pulse temporal pattern (ANSI Temporal 3) fire alarm signal now required by NFPA 72 for commercial and residential applications or a continuous tone by simply setting toggle switch from the device. Additionally, the B501BH-3 is designed to be compatible with existing installations of B200S(R) sounder bases.
The sounder base is intended for use with intelligent systems. It requires an external 24VDC supply or communication loop power supply, which is set by using a DPDT slide switch. The sounder base is capable of sounding in high volume or low volume with or without gradient tone. Work-alone mode or synchronization mode is also settable. These functions can independently set by two toggle switches. Refer to the panel manual for maximum allowable number of units per loop.

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