Bosch MSS 300 Detector Base Sounders Control via C-point of the detector

Detector Base Sounders are used when the acoustic signaling of an alarm is required directly at the site of the fire. The electronic tone generator integrated into the signaling device can produce 11 different tones (including DIN tones conforming to DIN 33404 and EN 457). The tone variants include different wailing tones, various signals for fire alarms, and other special modulations. Depending on the tone type, volume set, and operating voltage, the sound pressure level varies between 87 dB(A) and 100 dB(A). The programming of the tone type and volume setting is performed for the MSS 300 / MSS 300-WH-EC via integrated DIP switch and potentiometer (continuously) for the MSS 400 LSN / MSS 401 LSN via the LSN. MSS 400 LSN/MSS 401 LSN comply with EN54-3:2001/A1:2002 EN54-17:2005 MSS 300/MSS 300-WH-EC comply with EN54-3:2001/A1:2002 Control from the C point of the deployed fire detector When the detector is reset in the event of an alarm, the sounder is not reset. The sounder continues to sound for approx. 90 s after being switched off after occurrence of an alarm.