Signalling posts of the PSO-C type are designed for
audible emergency and warning signalling in the case of
their placement in stationary installations and on mobile
vehicles, where under operating conditions the presence of explosive mixtures is excluded.
Explosive mixtures are excluded.Signalling posts of ???-? type consist of a case and a cover. On the lid is installed electromagnetic mechanism of impact action, which by means of the striker and striker affects the diaphragm.
diaphragm.
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