An unbolted safe is a strongbox with a handle for carrying it away · review
KESSER states three double steel bolts, a 130 dB alarm that fires on tampering or after three wrong codes, and an external battery box so a flat internal cell does not lock you out.
The conclusion Better bolts and a genuinely useful battery box. The alarm is worth having only when somebody is home.
Two features here address real failures rather than adding numbers.
The most common way an electronic safe fails is the least dramatic: the internal cells go dead, the keypad stops responding, and the override key is inside the safe. KESSER supplies a box that powers the keypad from outside so the safe opens normally.
That is a piece of design thinking about how the product actually fails, and it is worth more than most specifications in this hub.
More engagement, spread across more of the door. Prising at one point does not release the whole door, which is the mechanism a single-bolt safe fails by. It is a genuine improvement.
130 dB on tampering or three wrong codes. In an occupied house that turns a quiet attempt into a loud one and brings people into the room — and a significant share of burglaries happen while somebody is home. In an empty house it is a noise nobody hears.
KESSER states a 4 mm steel door. Neither the wall thickness nor any security grade is published, and this page assumes neither.
Bolt it down. Every safe in this hub is a container until it is fixed to the building.
An occupied house wanting a safe that objects.
On sale at $170 on the American Amazon store at the time of checking.
Prices and availability are what Keepa reported on the date this page was updated; both move.
Prices quoted in this text were read on September 2, 2026. The live price is at the top of the page.
| Dimensions | 35 × 25 × 25 cm (13.8 × 9.8 × 9.8 in) |
|---|---|
| Bolts | 3 double steel bolts |
| Alarm | 130 dB on tampering or after 3 incorrect codes |
| Power | Internal battery with external battery box supplied |
| Construction | 4 mm steel door, stated by KESSER; walls not stated |
| Override | Supplied key |
| Mounting | Floor or wall |
| Amazon reference | B08CD478G2 |
| EAN | 4260663287224 |
In an occupied house, yes — it turns a quiet attempt into a loud one and brings people. In an empty house it is a noise in an empty room. Read it as a feature for when somebody is home, which is when many burglaries actually happen.
The commonest failure of an electronic safe: the internal cells die and the keypad stops responding, with the override key inside. An external box lets you power the keypad from outside and open it normally. It is a sensible piece of design.
More engagement across more of the door, so prising at one point does not release the whole door. It is a real improvement over a single bolt, and it does not change the steel of the walls, which KESSER does not quantify — only the door is stated, at 4 mm.
7.5/ 10
Better bolts and a genuinely useful battery box. The alarm is worth having only when somebody is home.
Between security devices of the same category and nearby price. Shown: what they all state. A half-filled column says nothing.
| Model | Price | Dimensions |
|---|---|---|
| KESSER Electronic Safe 35 × 25 × 25 | $170 | 35 × 25 × 25 cm (13.8 × 9.8 × 9.8 in) |
| BURG-WÄCHTER Favor S3 E | $140 | 200 × 310 × 200 mm (7.87 × 12.2 × 7.87 in) (H × W × D), that is 7.87 × 12.2 × 7.87 in |
| Amazon Basics 50SAM steel home security safe, 1.8 cu ft | $105 | 13.8 in wide, 13 in deep, 19.7 in high — stated as the external size. No internal dimensions are given, and this shelf's buying tip asks you to subtract the door and the walls before believing a capacity |
| AONBNOCT EJ 3.4 cu ft digital security safe | $99 | Not published — neither external nor internal. It is the only safe in this group with no measurement at all, at the largest claimed volume |
A reference exists on these Amazon stores: France, Germany, Italy, Spain, United States. Listed is not the same as in stock — availability changes daily.
Details checked on September 2, 2026.
Someone who wants the safe to make a noise rather than sit silently while it is worked on.
Specifications: the manufacturer sheet for home security products and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
Book-shaped diversion safe · 3-digit combination · fabric cover and spine · for a bookshelf
A diversion safe shaped like a book, with a fabric cover and spine and a three-digit combination lock. Amazon Basics states it is meant to sit between other books on a shelf.
Best for: Concealing something small in plain sight, in a house where nobody is looking hard.
14 L · digital keypad · 2 override keys · concealed anti-pry hinges · adjustable shelf · 4 × AA
A 14-liter steel safe with a digital keypad, two emergency override keys kept separately, concealed hinges described as anti-pry, and a removable adjustable shelf. It runs on four AA cells.
Best for: The default household safe: big enough for documents, small enough to bolt into a wardrobe floor.
≈ $58
200 × 310 × 200 mm (7.87 × 12.2 × 7.87 in) · self-programmable electronic lock · single-wall body · basic valuables protection
BURG-WÄCHTER describes the Favor S3 E as basic valuables protection: a single-wall body with a self-programmable electronic lock, in a furniture safe of 200 × 310 × 200 mm (7.87 × 12.2 × 7.87 in).
Best for: A household that wants a safe from a safe manufacturer rather than from a general brand.
≈ $140
