Pemko PEMKO HALF SURFACE HINGE 83 IN. ALUMINUM

Privacy features: After entering with a PIN pass code the user pushes the privacy button on the back of the lock (inner door) | The lock will now not open from the front entry side, until the user exits (door is reopened from the inside), or optional, the privacy session "times-out" following a preset duration | During any privacy-session, the red LED on the outer, key-pad side of the door will flash to indicate that the room is occupied | When exiting the room, the occupant simply leaves normally | As an added safeguard, this exit sequence, triggered by the rotation of the inside handle will also enable a 3 second delay, before it will accept an additional signal from the privacy button (eliminating inadvertent privacy-locking)|Features LED on the inside housing that flashes when privacy session activates|Programmable keypad ensures maximum safety|2,000 user codes allow for versatile use|Designed to withstand temperatures ranging from -35 degree to 66 degree C|Unlike conventional hinges, Pemkos continuous geared aluminum hinges distribute load stress uniformly along the full length of the door and frame, diffusing wear and tear from closer kickback shock and eliminating door sag and binding