SensoIRIS CSST IS is an analogue – addressable sounder with strobe and a build-in base, for connecting analogue – addressable fire detectors. SensoIRIS CSST IS is compatible for mounting on all models  standard bases for SensoIRIS devices – SensoIRIS B124 and SensoIRIS B124-HP

The sounder supports 32 different tone types at two sound levels. The tone type and sound level are programmed from the control panel.

The SensoIRIS CSST IS is compatible for operation with SensoIRIS analogue – addressable detectors series: T110 (IS), S130 (IS) and M140 (IS).

The device also has a build-in isolator module for protection against short-circuit.



  • One point of installation for detector, sounder and visual indicator with no additional wiring
  • Two sound levels – LOW: 81dB (A) ±3dB@3m; HIGH: 88dB (A) ±3dB@3m
  • 32 tone types selectable from the panel
  • Up to 100 sounders on loop (on low level sound)
  • Frequency of the strobe flashing – 1 Hz
  • Loop synchronization for uniform and clear alarm signal
  • Loop powered
  • Protection Degree – IP21C, type A
  • Compatible with SensoIRIS detector series
  • Compatible with standard bases B124 and B124-HP
  • Optional cover when used only as a sounder
  • Build-in isolator module
Operating Voltage Range 16 – 32VDC
Maximal consumption at communication 470 μА @ 27VDC
Maximal consumption (main tone type 27:
   – low volume level 3 mА @ 27VDC
   – high volume level 10 mА @ 27VDC
Power volume:
   – low volume (up to 100 pcs     sounders* to the loop). ~ 81dB (A) ± 3dB @ 1m
   – high volume (up to 30 pcs sounders* to the loop)  ~ 88dB (A) ± 3dB @ 1m
Wire Gauge for terminals 0.4 – 2.0mm2
Material and color SAN, transparent / White
Dimensions 105 х 22 mm

Product Documents

Marketing Documentation

SensoIRIS CSST IS - Datasheet
Updated at 19.04.2023 Size 0.17MB
SensoIRIS CSST IS - Brochure
Updated at 19.04.2023 Size 0.46MB


SensoIRIS CSST IS - EN 54 Certificate EVPU
Updated at 22.05.2023 Size 3.26MB
SensoIRIS CSST IS - Declaration of Conformity
Updated at 22.05.2023 Size 0.22MB
SensoIRIS CSST IS - Declaration of Performance
Updated at 22.05.2023 Size 0.48MB

Technical Documentation

SensoIRIS CSST IS - Manual
Updated at 19.04.2023 Size 0.45MB

Product pictures