Anodized aluminum housing (US 28). 12 or 24 VDC (selectable). No residual magnetism. Adjustable mounting bracket. MOV surge protection. Complete mounting hardware for typical installations. "L", "Z" & "U" brackets available for easy mounting. Detachable face plate. UL and ULC listed (E-941SA-1200 & E-941SA-1K2PQ only). CE listed. RoHS compliant. Built-in dual-color status LED and bond sensor to show locking status: Green - Door is closed and locked Red - Door not closed and/or locked Off - Door in use / no power Built-in adjustable door-relock timer, 1~78 sec.