The DE8310 Delayed Egress all-in-one lock can detect when pressure is applied to a door and can be field selected with a release delay of 15 or 30 seconds. This perimeter door solution is unique in that there is no need to replace existing door hardware, making it an easy and affordable access solution. The RCI DE8310 includes an external alarm sounder, keyswitch for reset and override, and a building code sign for single outswinging doors.