Request For Exit (Sometimes called REX, Push For Exit, or Push to Release) is a system designed to controlled access to a facility.
Doors fitted with these systems are considered permanently locked. A standard key or lock in not used on them. They are typically paired with magnetic lock systems.
Under normal circumstances only individuals inside the facility can trigger these doors, eliminating the chances of someone uses an exit door for unauthorized entry.
Options for Request For Exit
Standard wall mounted buttons are the most common. They require the physical pushing of a button to allow exit through a door. These are common in smaller facilities or where there is lower foot traffic.
Motion based is another option. This system uses motion sensors mounted above the door, in the frame. When an individual approaches close enough, the door is able to be opened. These are typically suited to large facilities, with more foot traffic.