Security Door Controls SDC 514 Exit Device Switch Kit JMAC# SDC-514 The SDC 514 is an exit device switch kit designed for the Dor-O-Matic 990, 1090, 1990 and 2090. Request-to-exit switch kits are installed in a mechanical exit device. When the exit device is depressed the switch releases magnetic locks for egress or may... MSRP: Was: Now: $109.57 Limited Stock Add to Cart