Answer: sirenes

AnswerCrossword Clue
SIRENESMusical horns.
SIRENESAir-raid warning devices.
SIRENESFog signal devices.
SIRENESFog signals.
SIRENESNoise apparatuses.
SIRENESWhistles: Var.
SIRENESAcoustical instruments: Var.
SIRENESAlarms.
SIRENESSignal devices: Var.
SIRENESFoghorns, French style