Master Lock 8.13K subscribers Subscribe Step by Step instructions for how to install a wall mount version of our Master Lock Bluetooth Lock Box. Please see additional videos from Master Lock for Step One: Press Down On The Open Button. The simplest version of these Master Locks is all handled through notched rods. As a result, holding down the open button will cause the lock mechanism to seek out those rods. If the rods are all correct and pressed in the same order, the lock will respond by opening. 1. Determine your Master Lock's Model. Determining the model of the master lock is critical in cracking a master lock. The reason behind this is that you may find yourself having spent time trying to crack a master lock, yet the steps you are following do not apply. In other words, certain models may need additional or distinct procedures This video demonstrates how to operate and set-your-own combination on the 5422D & 5423D Lock Boxes with the new push button combination convenience. This Ma Enter the combination by rotating the four number dials. The correct numbers should be centered— Depress the black tab to the left of the number dials. The entire face of the lockbox will open from the top, with a hinge at the bottom. To close the lockbox shut the face back with code entered and spin the wheels so that it isn't easily accessible. Backup Master Code. The Backup Master Code allows for emergency access to your lock if you are unable to access your lock with your Bluetoothenabled device or the Primary Code. It is a series of up/down/left/right directional arrows that you manually enter on the lock keypad. This code is unique to the lock, it cannot be changed and it is only (see instructions above). 2. Position the lock on the desired surface. 3. Use level to verify the lock is vertical. 4. Mark the position of the screw holes on the surface. 5. Remove lock. 6. Drill holes. 7. If necessary, use hammer to place anchors (not included). 8. Position lock. 9. Insert and tight en screws. 10. Close compartment d oor. 11. A: '- 5400EURD Medium key lock box Select Access® - with shackle - Instruction Manual - 5401EURD Medium key lock box Select Access® - wall mount - Instruction Manual - 5401EURDCRM Medium key lock box Select Access® - wall mount - Instruction Manual - 5403EURD Extra large key lock box Select Access® - wall mount - Instruction Manual - 5404EURD Small key lock box Select Access® - wall mount To hang Master Lock 5400D 1. Open the storage compartment door (see instructions above) 2. Push the shackle release lever to the left to open shackle. 3. Pull the shackle up and out of the lock. 4. Put shackle around door knob or other object 5. Close shackle to lock. 6. Close the storage compartment door. 7. Scramble the combination dials to lock 1. LaOpen the compartment door (see instructions above). 2. Using a pointed object, such as a pen, slide omb i na tS ET l ev r( ) d c of arrow. 3. Rotate dials to your desired combination. 4. Close door. Your lock is now set to your new 3combination. 5. Scramble the combin ation dials to lock the door and conceal y our combination. 6. Hold cable tip (A) and move toward left to remove from the lock. While pushing in button (B) turn the dials to any combination you choose. Release button (B), insert cable tip (A) back into the hole, push down and move all the way to the right. The lock is now ready to be used with your combination. To change the comb