Master Lock key safe 4-dial combination lock box — 5-key capacity, black/silver weather-resistant

Master Lock 5401D is a wall-mountable, four-dial combination key safe that stores up to five keys while protecting the code and contents from weather and tampering.

This compact key lock box combines a reinforced metal body with a shuttered door and a resettable four-digit combination, offering flexible, keyless access for families, property managers, and service providers. Designed for indoor or outdoor mounting, the 5401D balances security and convenience with a smooth pivoting door, included mounting hardware, and an unobtrusive black-and-silver finish that blends into home exteriors and entryways.

How many keys can it hold and what are the internal dimensions?

The 5401D safely accommodates up to five standard house, car, or padlock keys. Its interior gives you room for a small cluster of keys or slim keycards without folding or cramming.

• Interior height: 3-1/4 inch (8.3 cm)
• Interior width: 2-1/4 inch (5.7 cm)
• Interior depth: 1 inch (2.5 cm)
• Total internal volume: 7.3 cubic inches (18.5 cubic cm)

What kind of combination and code options does it offer?

The unit uses a four-dial, user-settable combination that lets you choose a custom code and change it whenever needed. Resetting the combination is straightforward, giving you thousands of possible combinations for improved privacy and control.

• Four rotatable numeric dials for a 4-digit code
• Resettable to any chosen combination
• No battery or electronics — mechanical reliability

Is this safe for outdoor use and how does the design protect the lock?

Yes — the 5401D is built for both inside and outside installation. A shutter door shields the combination dials from rain and dust, while the metal body resists forced impacts and attempted cutting better than thin plastic alternatives.

• Shutter door for enhanced weather resistance
• Reinforced metal body stands up to hammering and sawing
• Included mounting hardware secures the box to a wall or fixed object

How large is the box and will it draw attention on my porch?

The compact footprint is designed to be discreet yet functional, measuring under five inches tall so it can be mounted near an entry without dominating the space. The black-and-silver styling is intentionally understated to minimize visibility to casual passersby.

• Exterior size: 4-3/4 inch (12 cm) H x 3-1/4 inch (8.3 cm) W x 1-1/2 inch (3.8 cm) D
• Slim profile suitable for narrow entryways or utility areas
• Neutral finish blends with most home exteriors

Who is this for: The Master Lock 5401D fits homeowners, landlords, vacation-rental hosts, caregivers, and contractors who need dependable key access without distributing duplicates. It’s also a good match for real-estate agents and maintenance teams who require temporary secure access, and for anyone seeking a low-maintenance, mechanical solution that works indoors or out.