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MCL and SCL sirens are used, thanks to their sound power, in environments with high ambient noise and the presence of potentially explosive atmospheres. These ‘Ex de’ electromechanical sirens are suitable for signals of short duration and not continuous. They emit a linear intermittent sound and they reach their fundamental frequency after a short period.


Body and cover in low copper content aluminium alloy. Protective guard and impeller in plastic material with low resistivity. Silicone gaskets. 2 entries ISO M25 with PLG2IB plug and REV2IB cable gland. RAL 7035 epoxy coating. Thermostat intervention temperature 90+5°C. Intermittent service. Connection to the terminal board L, N, Pe sez. 4 mm2.

Type Description Marking Company Certificate
Atex Acoustic siren
  • II 2GD Ex de IIC T6
  • Ex tD A21 T85°C
CESI 11 ATEX 027