SensoIRIS WSST IS EN54-23 is аn addressable VAD (Visual Alarm Device) Wall Mount Sounder and Strobe with built-in isolator module, designed for installing in addressable fire alarm systems supporting TTE communication protocol.

The device is powered on from the panel and can be controlled via the communication protocol. SensoIRIS WSST IS is compatible with fire bases B124 for ceiling or wall mounting and WSB IP65 for wall mounting.


SensoIRIS WSST IS is certified according to EN54-3, EN54-17 and EN54-23 in LPCB!

SKU: 606 Category:


  • Selectable sound level – LOW (80-88dB)* and HIGH (92-98dB)*
  • 32 sound types selectable from the panel
  • Piezo sounder
  • White LED flash
  • Loop synchronization
  • Loop powered
  • Transparent plastic case
  • EN54 – 23/3/17 certificated

*Depends on the selected sound type. The main tone type is 27 – the detailed description of the tone types is presented in the installation manual.

Operating Voltage Range 16 – 32VDC (Nom. 27VDC)
Nominal consumption (stand-by)  < 500μА@27VDC
Wire Gauge for terminals 2.5mm²
Operating temperature -10°C to +50°C
Protection IP21C (mounted on B124)
IP65 (mounted on WSB IP65)
Weight 183g
Dimensions (without base) 116x55mm
Maximal consumption (main tone type 27):
     – low volume level, sound only < 5mА
     – low volume level, sound and strobe < 12mА
     – high volume level, sound only < 16.5mА
     – high volume level, sound and strobe < 22mА
Maximal consumption (other tone types):
     – low volume level, sound only < 4mА
     – low volume level, sound and strobe < 11mА
     – high volume level, sound only < 10mА
     – high volume level, sound and strobe < 16.5mA
Consumption with activated isolator < 15mA


























Product Documents

Marketing Documentation

SensoIRIS WSST IS EN54-23 - Datasheet
Updated at 21.04.2020 Size 0.27MB


SensoIRIS WSST IS - EN 54 Certificate EVPU
Updated at 19.05.2021 Size 0.72MB
SensoIRIS WSST IS - Certificate LPCB
Updated at 29.07.2021 Size 0.17MB

Technical Documentation

Product pictures