SF100 RSND is а conventional fire alarm sounder, designed for installing in conventional fire alarm systems. 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”. The tone sounds of the inputs are different for easy recognition from the users on the protected site. The Evacuation event is with the highest priority.

SF100 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 SF100 RSND is certified according to standard EN54, part 3.

BOSEC certified.

SKU: 829 Category:


  • Piezo Loudspeaker type
  • 32 tone types
  • 2 sound levels (selectable by jumpers): High (102dB) and Low (94dB)
  • Small and compact design
  • Certified according to standard EN54 – part 3
Operating Voltage Range 20-28VDC
Maximal consumption (main tone type 27)
– low volume level 8.5 mА @ 24VDC
– high volume level 22mA @ 24VDC
Sound volume (main tone type 27)
– low volume ~ 94dB @ 1m
– high volume ~ 102dB @ 1m
Sound volume (other tone types)
– low volume 88-99dB @ 1m
– high volume 90-102dB @ 1m
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 Red/White
Material ABS
Weight ~248g
Dimensions 102x32mm








Product Documents


SF100 RSND - Declaration of conformity
Updated at 05.01.2024 Size 0.19MB
SF100 RSND - Declaration of performance
Updated at 05.01.2024 Size 0.44MB
SF100 RSND - EN 54 Certificate EVPU
Updated at 05.01.2024 Size 1.38MB
BOSEC certificate
Updated at 01.08.2023 Size 0.53MB

Marketing Documentation

SF100 RSND - Datasheet
Updated at 12.04.2024 Size 0.22MB

Technical Documentation

SF100 RSND - Installation manual
Updated at 05.01.2021 Size 0.25MB

Product pictures