An electronic whistle complete with loudspeaker, built-in membrane control panel and electronic controller, class AB voice amplifier and automatic fog signal or automatic customised signal. Ultrasonic heating system for improved acoustic membrane performance. Meets COLREG 1972 IMO class III
An electronic whistle complete with loudspeaker, built-in membrane control panel and electronic controller, class AB voice amplifier and automatic fog signal or automatic customised signal. Ultrasonic heating system for improved acoustic membrane performance. Meets COLREG 1972 IMO class III
An electronic whistle complete with loudspeaker, built-in membrane control panel and electronic controller, class AB voice amplifier and automatic fog signal or automatic customised signal. Ultrasonic heating system for improved acoustic membrane performance. Meets COLREG 1972 IMO class III
An electronic whistle complete with loudspeaker, built-in membrane control panel and electronic controller, class AB voice amplifier and automatic fog signal or automatic customised signal. Ultrasonic heating system for improved acoustic membrane performance. Meets COLREG 1972 IMO class III
An electronic whistle complete with loudspeaker, built-in membrane control panel and electronic controller, class AB voice amplifier and automatic fog signal or automatic customised signal. Ultrasonic heating system for improved acoustic membrane performance. Meets COLREG 1972 IMO class III
An electronic whistle complete with loudspeaker, built-in membrane control panel and electronic controller, class AB voice amplifier and automatic fog signal or automatic customised signal. Ultrasonic heating system for improved acoustic membrane performance. Meets COLREG 1972 IMO class III