EW3-M electronic whistle 20/75m + ampli + fog signal

Approved electronic whistle complete with loudspeaker, built-in membrane control panel and electronic controller. New ultrasonic heating system for improved acoustic membrane performance. Meets COLREG 1972 IMO class III international regulations with RINA, LLOYD'S REGISTER MCA, BUREAU VERITAS, NMMA and BSH homologations. Includes mounting kit.