Codelocks CL155 Mechanical Digital Door Lock - With Holdback
The CL150 includes a dual backset deadlatch that always locks when the door is closed. Convenient vertical lever handle on the back-plate. Includes a dual backset latchbolt for both 2 3/8" and 2 3/4" backsets. Includes matching cover plates required when replacing an existing cylindrical knobset lock (covers 2 1/8" round hole in the door). Available in Stainless Steel or Polished Brass
The lock has a slide button which can be used to hold open the latchbolt for free entry without operating the code (when the lock is not required to be operational).