MIL-S-503 Revision B:1988
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
SIREN, ELECTRIC, 2 AND 5 HORSEPOWER
05-22-2000
Outlines non-directional electric motor driven sirens rated at 600 volts or less, complete with all controls and auxiliary equipment, suitable for mounting in the open on roofs or other supporting structures without additional protection from the weather.
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