SF100 WSST is а conventional fire alarm sounder with a strobe. The sounder supports 32 different alarm tone types selectable via DIP switches on the PCB.

The sounder has two inputs for connection to a conventional fire alarm panel:“Alarm” and “Evacuation”.
In case the two inputs are used, the “Evacuation” input always has a priority in activation.

SF100 WSST is designed for indoor use only. The sounder is easy for installation and consists of three parts: mounting plane basis, sounder and strobe combined in a common body and a plastic transparent cover. The conventional sounder SF100 WSST is certified according to standards EN54, part 3 and part 23.

BOSEC certified.

SKU: 830 Category:


  • 32 sound types selectable from the panel
  • Piezo sounder
  • White LED flash
  • Transparent plastic case
  • Certified according to standard EN54 – part 3 and 23
Operating Voltage Range 20-28VDC
Maximal consumption (main tone type 27)
– low volume level, without strobe 8.5 mА @ 24VDC
– low volume level, with strobe 12 mА @ 24VDC
– high volume level, without strobe 22mA @ 24VDC
– high volume level, with strobe 25mA @ 24VDC
Sound volume (main tone type 27)
– low volume 87-96dB @ 1m
– high volume 95-104dB @ 1m
Sound volume (other tone types)
– low volume 82-98dB @ 1m
– high volume 85-104dB @ 1m
Frequency of the strobe flashing 1Hz
Wire Gauge for terminals 0.2 – 1.5mm2
Operating temperature -10°C ÷ +60°C
IP Protection IP21C
Relative humidity resistance (93 ± 3)% @ +40°C
Color white transparent
Material SAN
Weight ~248g
Dimensions 102x32mm


Product Documents


SF100 WSST - EN 54 Certificate EVPU
Updated at 05.01.2024 Size 1.38MB
SF100 WSST - Declaration of conformity
Updated at 13.04.2020 Size 0.28MB
SF100 WSST - Declaration of performance
Updated at 05.01.2024 Size 0.53MB
BOSEC certificate
Updated at 01.08.2023 Size 0.53MB

Marketing Documentation

SF100 WSST - Datasheet
Updated at 04.03.2020 Size 0.21MB

Technical Documentation

SF100 WSST - Installation manual
Updated at 05.01.2021 Size 0.26MB

Product pictures