ROUND ACTUATOR KEY SWITCH, CES, I-O-II WITH 2 KEYS LATCHING ON THE LEFT MOMENT. CONTACT ON THE RIGHT WITH HOLDER, METAL, LOCK NO. STGH 10, O+I, !!! Phased-out product !!! SIRIUS ACT 3SU1 is successor Preferred successor type is >>3SU1050-5LN51-0AA0 + 3SU1550-0AA10-0AA0<<