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  FireLite B401BH Sounder Base for 400 Series Detector

FireLite B401BH Sounder Base for 400 Series Detector


Our Price : $61.00

Product Code: B401BH


The System Sensor B401BH(A) Base with Sounder is used with conventional 400 Series two-wire plug-in smoke detectors. Refer to the associated control panel manual for more information on detector heads.


The B401BH(A) base is intended for use with conventional plug-in systems. See systems literature for maximum allowable number of units per loop.

Construction and Operation:

The B401BH(A) requires an external 24 VDC supply with reverse polarity capability. The connections of the external supply (terminals 1 and 2) and the communication/initiating loop (terminals 3, 4, and 5) are isolated in the B401BH(A) to prevent electrical interaction between them.


Base diameter: 6.0" (152.4 mm).
Base height (less base & sensor): 0.75" (19.05 mm).
Weight: 0.3 lbs. (140 grams).
Operating temperature range: 14F to 140F (-10C to +60C).
Operating humidity range: 10% to 95% relative humidity, non condensing.
Sounder in UL reverberant room: 85 dBA minimum.
Sounder in anechoic room: > 90 dBA @ 10 feet (3 m), 24 volts.

Electrical Ratings:
Wiring: Two - wi r e.

External Supply:
Volt age: 17 to 32 VDC.
Standby current: 1.0 mA maximum.
Alarm current: 15 mA maximum.

Agency Listings and Approvals:
These listings and approvals apply to the B401BH(A). In some cases, certain modules or applications may not be listed by certain approval agencies, or listing may be in process. Consult factory for latest listing status.
UL Listed: file S911.
ULC Listed: file S911.
CSFM approved: file 7300-1653:109.
Maryland State Fire Marshal approved: Permit # 1985.
MEA approved: file 205-94-E.

Product Line Information:
B401BH: Sounder base assembly, includes pre-assembled sounder and B401 base.
B401BHA: Same as above with ULC listing.
B401: Plug-in flangeless base for 400 Series detectors.
B401A: Same as above with ULC listing.
  • Sound output greater than 90 dBA measured in anechoic room at 10 feet (3.048 m), 24 volts.
  • 85 dBA minimum measured in a UL reverberant room.
  • An alarm delay of approximately 10 seconds is built into the B401BH(A).
  • This delay is present whether the control signal comes from the sensor or from reversing the external power supply polarity.

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