MIL-A-51384A, MILITARY SPECIFICATION: ALARM UNIT, CHEMICAL AGENT AUTOMATIC ALARM: ABCA-M42 (05-NOV-1979) [S/S BY MIL-DTL-51384 (CONTROLLED DISTRIBUTION DOCUMENT (DIST. STATEMENT \"C\")]

MIL-A-51384A, MILITARY SPECIFICATION: ALARM UNIT, CHEMICAL AGENT AUTOMATIC ALARM: ABCA-M42 (05-NOV-1979) [S/S BY MIL-DTL-51384 (CONTROLLED DISTRIBUTION DOCUMENT (DIST. STATEMENT \"C\")]., This specification covers one type of remote alarm unit suitable for use with chemical agent detection systems such as the M8A1, M22, and M21, and Joint Chemical Agent Detector (JCAD) systems.