Since 1972, SDC has manufactured
popularelectrified access control
hardware like Bolt Locks, EMLocks®
and Strikes in America while
most of our larger competitors
manufacture overseas.
SDC’s S4000 series of electrified industrial exit
devices satisfy both market needs for a cost-effective
exit device with ELR, but the S4000 also comes
standard with request-to-exit (REX) monitoring.
