Rank #2 in Best Key Safe 2026: 10 Ranked, and the Numbers That Don't Add Up
Master Lock Light Up Dial Key Safe, Medium, Grey
Price and rating as shown on Amazon when we collected them. Both change.
Second in this guide, the Master Lock 5425EURD — sold as the Master Lock Wall Mounted Light Up Dial Key Safe, Medium — is the middle-priced box here at £31.00: a resettable four-digit combination lock with dials that light up automatically each time the weather cover is opened. At 4.7 out of 5 from 5,723 ratings it has the highest score and by far the largest review base in the list.
The number to look at closely is the one the listing argues with itself about. A bullet promises a 'Large Internal cavity' for 'multiple keys'; the same bullet then gives the interior as 106 mm H x 60 mm W x 25 mm D, which works out at about 159 cm³ — roughly a sixth of a litre. The specification table underneath lists a chamber depth of 2.05 cm, while the interior depth in the bullet is 25 mm, a difference of about 4.5 mm on the same page. Check the length of your keys against 106 mm before you trust the word 'large'.
Everything on this page comes from the Amazon listing for this product. We have not handled or tested the key safe ourselves.
How those 5,723 ratings break down
An average hides its own shape. This is the spread behind the 4.7 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £31.00 |
|---|---|
| Rating | 4.7 out of 5 from 5,723 ratings |
| Interior dimensions (as listed) | 106 mm H x 60 mm W x 25 mm D, about 159 cm³ |
| Chamber depth (as listed) | 2.05 cm, against the 25 mm interior depth given in the same listing |
| Lock body size | 72 x 126 x 52 mm (listed as 5.2D x 7.2W x 12.6H cm) |
| Lock type | Resettable 4-digit mechanical code lock with light up dials |
| Battery | Replaceable CR2032 (installed) |
| Water resistance level | Water Resistant, though Special Features on the same page lists 'Waterproof' |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“Bought for national trust houses, easy to fit and adjust numbers.you won't get many keys in them but have a built in pocket for the. The light up part is really handy when dark.”
Verified purchase“Good quality as you would expect for the money. Easy to install. Cover will hopefully keep it protected from the elements. There is a small button battery (included) so the combination pad is lit when the cover is removed which is great in the dark.”
What it is up against
The rivals it was ranked against in Best Key Safe 2026: 10 Ranked, and the Numbers That Don't Add Up.
Questions people ask
How big is the Master Lock 5425EURD inside?
The bullet gives the interior as 106 mm H x 60 mm W x 25 mm D, which is about 159 cm³. The specification table on the same page lists the chamber depth as 2.05 cm rather than the 25 mm given in that bullet.
How many keys will it hold?
Master Lock says a 'Large Internal cavity allows secure storage for multiple keys', and gives the interior as 106 mm H x 60 mm W x 25 mm D, so the space on offer is about 159 cm³ in total.
Does the Master Lock 5425EURD light up?
Yes. The dials are described as 'large easy to read light up dials' that light up automatically each time the weather cover is opened. A replaceable CR2032 battery is included and installed.
Is it waterproof?
The spec table gives the water resistance level as 'Water Resistant', while Special Features on the same page lists 'Waterproof'. Master Lock describes the body and weather cover as metal and the box as designed for permanent installation, for indoor and outdoor use.
What combination does it use?
A resettable 4-digit combination, listed as a mechanical code lock, with a large open lever for what Master Lock calls keyless convenience.
What do the 5,723 ratings actually show?
The page shows 4.7 out of 5 from 5,723 ratings, but the rating bars beneath it total 100: 79 five-star, 16 four-star, 3 three-star and 2 one-star. Master Lock also lists a limited lifetime warranty.
Comments
Reader comments are not checked against the manufacturer's claims above.
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