Hera RSND (SF100 Lite RSND)

Hera RSND is а conventional fire alarm sounder with one input for connection to a conventional fire alarm panel. Hera RSND 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 red (white) cover.


The conventional sounder Hera RSND (SF100 Lite RSND) is certified according to standard EN54, part 3.



  • One tone
  • High sound level – High (102dB)
  • Small and compact design
  • Certified according to standard EN54 – part 3


Operating Voltage Range 20-28VDC
Maximal consumption 55mA @ 24VDC
Maximal sound volume 102dB @ 1m
Color Red/White
Material ABS
Dimensions 102x32mm

Product Documents


Hera RSND - Declaration of conformity
Updated at 05.01.2024 Size 0.19MB
Hera RSND - Declaration of performance
Updated at 05.01.2024 Size 0.44MB
Hera RSND - EN 54 Certificate EVPU
Updated at 19.05.2021 Size 0.77MB

Marketing Documentation

Hera RSND (SF100 Lite RSND) - Datasheet
Updated at 11.12.2020 Size 0.15MB

Technical Documentation

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

Product pictures