KM0 – KM0S -KM1S Sirmedium range turbine siren PRESENTATION Suitable for industrial site alarms with a specific sound frequency (570Hz). 88 to 147 dB at 1m Small footprint: No pavilions Mesh crown with built-in protection. Mono or three-phase power supply. Stability. SOUND FREQUENCY : 570 Hz. Documentation French version fiche('ECS_Kara8_up_typeA');