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" and "U" brackets available for easy mounting. Detachable face plate. UL and ULC listed. CE listed. RoHS compliant. Built-in dual-color status LEDs and bond sensors with relays (one per door / 3A@12VDC) to show locking status of each door: Green: Door is closed and locked Red: Door not closed and/or locked Off: Door in use / no power