The Yale Code Handle provides flexible locking options for doors that need to be always locked or alternatively can be left open to provide free access during the day and locked at night The Code Handle is an electronic product that is not weather rated, so use should be limited to appropriate environments Yale Code handle is an innovative solution with an automatic locking mechanism built into the handle, which only allows the door to be opened when entering the correct personal code The locking mechanism is operated with 4 buttons with unique reset functions Master code and user codes can be reset as and when required with 2 CR2, 3V lithium batteries in outer handle Easy to fit on standard doors, no cables, suitable for indoor use only, features stainless steel and zinc chrome finish