22MM PLASTIC ROUND COMPLETE UNIT COMBINATION: EMERGEN.-STOP MUSHR.PUSHB. 40MM LATCH.W. ROT.-TO-UNLATCH MECH. WITH YELLOW BACKING PLATE SCREW TERMINAL, 1NC WITH HOLDER RED INSCRIPTION: NOT-HALT !!! PHASED-OUT PRODUCT !!! SIRIUS ACT 3SU1 IS SUCCESSOR PREFER