The WT-M-1602-30 has a structure that allows
the lock body to be turned after the PIN is
entered. The unlock light turns on after a PIN
authorized to open is entered. You can open
the lock body by turning it within 3 seconds. If
you don't turn the lock body within 3 seconds,
it will lock again. When the lock body is turned
to the locked position while it is open, it is
automatically locked.