Lock library · linked to the makers' own documents
Which lock do I have?
The safe has one name on the outside and a different one on the lock — and it is the lock's name that decides everything: which battery, which dialling sequence, which manual. Look at your dial or keypad and find it below.
Where the name is written
On a dial, around the ring or under the index mark. On a keypad, on the face or moulded into the
housing. If there is no name at all, photograph the keypad shape and the dial numbering — those
two details identify most locks in use today.
Electronic keypads
| Lock | Power | What it does when the battery dies | Manual |
|---|---|---|---|
| S&G 6120 | Two 9 V alkaline | Twenty consecutive beeps after the code and #; pitch of the sounder changes when low | operating instructions (PDF) |
| S&G 6120 / 6123 | Two 9 V alkaline | Model-specific beep patterns, tabulated by the maker | troubleshooting guide (PDF) |
| S&G 2740B | Battery, electromechanical | Refuses to drive the bolt while signalling correctly | operating instructions (PDF) |
| LaGard Basic (700 series) | One 9 V alkaline | Repeated LED flash with beeping; may give the correct-code double beep and still not open | dormakaba, current owner of the LaGard line |
| SecuRam | 9 V alkaline | Common on gun safes; keypad and body sold separately | maker's site |
Rule that applies to all of them: fresh alkaline only. A rechargeable 9 V cell sits at a lower voltage and reproduces exactly the fault you are trying to clear. Makers advise an annual change whether or not the battery is flat.
Mechanical dials
| Lock | Type | Notes | Manual |
|---|---|---|---|
| S&G 6730 / 6730-100 | Three-wheel, 0–99 dial | Standard 4–3–2 sequence; on locks splined at 50 the third number must not fall between 5 and 11 | manual (third-party mirror — the maker publishes no public PDF for this one) |
| S&G 2937 | Three-wheel, government service | Found on older institutional containers | maker's document library |
| Unbranded three-wheel | Three-wheel | Most pre-2000 domestic safes; sequence identical to the above | see dialling page |
Why we link out instead of hosting
These manuals belong to their makers. We link to the original file on the manufacturer's own
server wherever it exists, so that you get the current revision and they get the traffic.
Where only a third-party mirror exists, we say so in the link. Nothing here is re-hosted,
and no page on this site contains bypass information.
Keypad problems DIAGNOSE
Dial problems DIAGNOSE
No combination at all RECOVERY
Call a technician COSTS
Missing your lock? Write to the desk with a photograph of the dial or keypad and the safe's plate. Added models are credited to whoever sent them in, unless asked otherwise.