Available only from Schlage, a new visual status indicator option for L-Series locks provides at-a-glance verification of the locked/unlocked status of door. As a result, teachers and others can easily identify if the door is locked and quickly secure the lock if it is unlocked. The new visual status indicator is available as an option for new construction as well as the aftermarket.
More Info: http://www.securitytechnologies.ingersollrand.com