Set up your PIN for the cash drawer in 4 easy steps: Step 1-2: Open Safe: Remove key cover,insert key and turn left;turn entry knob clockwise to open. STEP 3: INSTALL BATTERIES: Insert 4 "AA" batteries into the battery compartment on the inside of the door; STEP 4: Set a new code: Press the red reset button inside the door until it beeps,enter the new code (3 to 8 digits) within 15 seconds,then press button "E" to complete setup.