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сигнальная сирена stresses
Gruzovik	howling horn
astronaut.	klaxon alarm; klaxon alarm tone
sec.sys.	alarm siren
shipb.	warning sirene
space	klaxon alarm (tone)
tech.	warning horn
telecom.	signal horn (oleg.vigodsky)
сигнальные сирены
O&G, sakh.	alarm sirens

сигнальная сирена : 12 phrases in 4 subjects

Astronautics	3
Aviation	1
Military	2
Space	6