Applicable for sound and flash LED indication of events registered in Fire Alarm Systems. 
FS 1972 is compliant with EN54-3. The sounder is connected a two-wire cable on a base FS C01
. After being mounted on its base, the sounder must be locked.
TECHNICAL DATA
•    Power supply: 9-30 V DC
•    Alarm state current: 60 mА/24V DC
•    Sound level, type “Slow whoop” on 1m:  96dB /24V DC
•    Frequency, pattern “Slow whoop”:  0,5 – 1,2 kHz
•    Flash light signalling:  Red
•    Connection to fire detector:  Two-wire line
•    Degree of protection:  IP 40
•    Operational temperature range: Minus 15ºС to70ºС
•    Relative humidity resistance:  (93 ± 3)% at40ºС
•    Dimensions:  Øф100mm / h≤52mm
•    Weight: 100g