Hera WSST (SF100 Lite WSST)

Hera WSST is а conventional fire alarm sounder with strobe and has one input for connection to a conventional fire alarm panel. Hera WSST is designed for indoor use only. The sounder is easy for installation and consists of three parts: mounting plane basis, sounder body and a plastic transparent cover .

The conventional sounder Hera WSST (SF100 Lite WSST) is certified according to standards EN54, part 3 and part 23.



  • one tone
  • Piezo sounder
  • Red LED flash
  • Transparent plastic case
  • Certified according to standard EN54 – part 3 and 23
Operating Voltage Range 20-28VDC
Maximal consumption 85mA @ 24VDC
– Sounder only 55mA @ 24VDC
Maximal sound volume 95-104dB @ 1m
Frequency of the strobe flashing 1Hz
Color White transparent
Material SAN
Dimensions 102x32mm

Product Documents


Hera WSST - Declaration of conformity
Updated at 05.01.2024 Size 0.19MB
Hera WSST - Declaration of performance
Updated at 05.01.2024 Size 0.53MB
Hera WSST - EN 54 Certificate EVPU
Updated at 19.05.2021 Size 0.79MB

Marketing Documentation

Hera WSST (SF100 Lite WSST) - Datasheet
Updated at 28.04.2023 Size 0.13MB

Technical Documentation

Hera WSST (SF100 Lite WSST) - Installation manual
Updated at 05.01.2021 Size 0.20MB

Product pictures