Bosch FNX-425U-WFWH Addressable Continuous Base Sounder and White Flashing Visual Alarm, White Housing

This model from the AVENAR all-in-one 4000 family combines EN 54-3 base sounder and EN 54-23 visual alarm in a single housing within the addressable loop. The white enclosure and white flash combination is inconspicuous on indoor ceilings; the internal lithium battery pack LSN prevents warning interruption even on stub lines. It produces 97 dBA sound pressure at one meter distance. Since it sits on the detector base, sounder and flasher do not require separate wiring; installation and mounting time per floor is reduced.