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Grey rectangular key safe with shackle and combination dials, 3.50 by 2.75 by 1.00 inches

Master Lock

Master Lock 5400D Key Safe 3.50" x 2.75" x 1.00

SKU CH-QJFG-J81A5 MPN 5400D

A portable key safe holds up to five keys behind a resettable four-digit combination in a weather-resistant die-cast body

  • Product typeSecurity Safes
  • Key featuresOver the door knob design for portable installation Large in
  • Size details3.5 in × 2.75 in × 1 in
  • Holds over five keys without jamming thanks to the large internal cavity
  • Set your own four-digit combination for keyless convenience
  • Die-cast steel body resists hammering and sawing attacks
  • Weather-resistant zinc lock and shutter endure outdoor conditions
  • Over-the-door-knob design enables portable, tool-free installation

Portable Key Storage for Home and Vehicle Access

The Master Lock 5400D provides a portable, over-the-door-knob safe that holds up to five keys. Its solid die-cast steel body resists hammering and sawing, while the zinc lock body and weather-resistant shutter protect the mechanism outdoors. A moulded bumper and vinyl-coated shackle prevent surface scratches during use. The grey finish blends with surroundings to minimise attention.

Suits Homeowners and Property Managers Needing

Ideal for households, carers or rental hosts who must grant entry without handing out physical keys. The resettable four-digit combination lets authorised users enter a code they can remember. Not for buyers who require audit trails, electronic credentials or a unit that mounts permanently to a wall or solid surface.

Internal Cavity Accepts Multiple Keys Without

The spacious cavity measures 3.25 in. wide by 7.25 in. high by 1.5 in. deep, accommodating over five standard door or car keys simultaneously. This capacity is the deciding factor: if your key bundle exceeds this volume, the safe will not close securely.

How it compares

Measured against everything we stock in Home & Office Safes, at today’s prices. Recalculated every night.

Price $33.99
Cheaper than about 73% of the 154 comparable items (median $59.99).

Specifications

Product
Brand nameMaster Lock
Model name5400D
Product typeSecurity Safes
Size & build
Size details3.5 in × 2.75 in × 1 in
Shipping weight0.87 kg
Package size343 × 267 × 133 mm

Questions about this item

How do I verify the 4-digit combination I set on the 5400D is working before I leave keys inside?

After setting your personal 4-digit code, scramble the dials, then re-enter the combination; the shackle should release smoothly, confirming the mechanism operates as intended.

What comes in the package and is any mounting hardware sold separately?

The clamshell package contains the 5400D key safe unit only; its over-the-door-knob design requires no extra hardware for portable installation.

Which capacity should I choose if I need to store five standard door or car keys?

This model’s internal cavity is rated for over five keys, so the single 5400D version covers that requirement without needing a larger size.

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