Master Lock
Master Lock No. 5400D Portable Lock Box
The Master Lock No. 5400D Portable Lock Box features a 3-1/4in (83mm) wide metal body for durability. The portable design offers removable “over the knob” installation. Set your own 4-digit combination for keyless convenience and increased security. The shutter door protects combination dials from weather, dirt and grime; and molded body and vinyl coated shackle prevent scratching. The Limited Lifetime Warranty provides peace of mind from a brand you can trust.
- Over the door knob design for portable installation
- Large internal cavity prevents jamming, even when holding multiple keys
- Set your own combination convenience for optimal security
- Set your own 4-digit combination for keyless convenience and increased security
- Protective weather cover prevents freezing and jamming
- Molded body and vinyl coated shackle prevent scratching
- Also available with personalized laser engraving – Learn more
- Internal Dimensions: 3-1/2in (89mm) H x 2-3/4in (70mm) W x 1in (25mm) D
Master Lock No. 5401D Wall Mount Lock Box
The Master Lock No. 5401D Wall Mount Lock Box features a 3-1/4in (83mm) wide metal body for durability. The wall mount design offers permanent installation. Set your own 4-digit combination for keyless convenience and increased security. The shutter door protects combination dials from weather, dirt and grime; and molded body and vinyl coated shackle prevent scratching. The Limited Lifetime Warranty provides peace of mind from a brand you can trust.
- Wall mount design for permanent installation
- Large internal cavity prevents jamming, even when holding multiple key
- Set your own combination convenience for optimal security
- Protective weather cover prevents freezing and jamming
- Molded body and vinyl coated shackle prevent scratching
- Internal Dimensions: 3-1/4in (83mm) H x 2-1/4in (57mm) W x 1in (25mm) D
Unbelievably bad customer service
I bought a lock box for my elderly mother (5423EURD) and fitted it, following the instructions. The lock doesn't work (it is jammed) so I now have a lock box on a wall that I cannot open. I used the online customer service to report the issue and - despite saying they reply to all contact within 48 hours - they never replied. I tried this twice. I then tried calling and they said the only option was to buy a new box and leave the original one on the wall. They had no advice what-so-ever on how to resolve the jamming issue. Avoid this company like the plague.

Masterlock thumbs down
The master lock key safe is supposed to have a lifetime guarantee. My lock failed after 12 months when the internal setting lever snapped. I have reported this twice to master lock who say they will respond in 48 hours but I have not received any response. Needless to say I hall not be using master lock for the replacement key safe I now have to purchase.

LEAVE YOU STRANDED WHEN THEY DISCONTINUE A LINE
I always assumed buying from Masterlock they would be around and I would never have any problems getting a replacement key. BAD ASSUMPTION. The company no longer makes bicycle cuff locks and won't even bother to service the locks it already sold. Completely unreliable and I will never, ever buy another lock of any kind from them.
