Master Lock key boxes work by allowing secure storage of keys accessible only by those who know the combination or have the override key (if equipped). A common example involves setting and using a combination.
Here's a breakdown of how a typical Master Lock key box functions, drawing from the provided video example (where a 5400D/5401D is used):
Setting the Combination (Example Using 2-4-6-8):
- (Assuming you are setting a new combination or resetting an existing one, which might involve an initial factory default code.) Open the key box using the current combination (if one is already set).
- Locate the set lever (this may vary slightly between models).
- Use the video instruction to learn how to set the combination.
- Push the set lever up and right to return it to the original position.
- Close the key safe compartment door.
- Scramble the combination dials to lock the door.
Opening the Key Box:
- Enter the correct combination by rotating the dials to the appropriate numbers.
- The box should then open (usually by sliding a latch or opening a door).
Key Components and Mechanisms:
- Combination Dials/Push Buttons: These are the primary input method. The correct combination aligns internal tumblers to allow the box to open.
- Release Mechanism: This is the latch or door that physically opens the key box. It's activated when the correct combination is entered.
- Housing: A durable casing protects the keys and the internal mechanisms from weather and tampering.
- Set Lever: Used to set the combination.
General Working Principle:
Master Lock key boxes rely on a mechanical or electromechanical system. When the correct combination is entered, internal components align, allowing a lever or latch to be moved, thereby unlocking the box.
