This Exterior mount key switch with stop button is perfect for your access control needs. The key switch has momentary open and close commands with a large red mushroom switch used for a stop command. The Open and Close switches use both a normally open and normally closed switch with a normally open switch for the stop button.
The unit comes with two keys and, if needed can be re-keyed by a qualified locksmith for key-matching situations.
Security is provided by the very heavy metal case and the key is required to remove the front cover for access to the inside of the lock.