# Master Lock Light Up Dial Key Safe, Medium, Grey

Source: https://www.ranked10.co.uk/home/best-key-safes/master-lock-5425eurd-key-safe
Ranked #2 in "Best Key Safe 2026: 10 Ranked, and the Numbers That Don't Add Up": https://www.ranked10.co.uk/home/best-key-safes

- Price: £31.00 (checked on Amazon UK on 2026-09-19)
- Amazon rating: 4.7 from 5,723 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B01M3PKXRX?tag=ranked10-21

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.

## Specification

| Field | Value |
|---|---|
| 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' |

## 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.