Automatically Locking Lever Handle Locks.

■  Uses a double-throw-latchbolt automatic lock.
■  When  the  door  is  closed,  a  double  throw  of  the 
latchbolt occurs, to function as a deadbolt.
■  The outside lever handle is always immobilized, so the 
lock is opened by using the key to retract the latchbolt.
■  From the inside, the lever handle can always be used to 
retract the latchbolt and open the lock.      
(Function type 2A only)