SC In. Lockwood Digital Locks are designed to control access into commercial areas, especially when frequent combination changes are needed to maintain security. For extra security when under forced attack, the inbuilt clutching mechanism allows the outside knob to rotate without operating or damaging the lock. The factory set 5 digit code is easily changed to any 4, 5 or 6 digit code using the code changing kit provided with each lock.. Non-handed units. Non-reversible latch. Protective clutch mechanism. Visi-packed