What is the optional 4-eyes principle (dual control) for safe locks?

The 4-eyes principle (dual control) is an optional electronic-lock mode that requires two different people to each enter their own valid code before the safe will open, so no one can access it alone.

M-Locks DE 2010 DE 2030 Keypad

M-Locks DE 2010 / DE 2020 / DE 2030 Keypad

Item no.: ML-DE20

Delta electronic key pad are provided with an electronic key contact (Dallas key) and have integrated emergency power supply. The battery compartment to the Delta locks is found inside of the safe. The entries can be both fixed and turnable.

Delta entries can be combined with the following electronic locks:
EM2020 EM2050
EM3020 EM3050
EM3520 EM3550
EM4020 EM4050

Currently, we are not able to sell this lock separately. It can only be bought together with a safe.

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Delivery time

1-2 weeks + 2 weeks

Delivery to Switzerland: we bundle orders and ship once a month, which adds about 2 weeks.

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Installation

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Prices shown are estimates only. Final pricing depends on factors such as location, accessibility, stairs, and weight.

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Product specifications

Product Information

Specifications
Color	As shown in image

Questions & Answers

Common questions about this product, from our Knowledge Base.

My electronic safe lock is out of battery. How can I replace the battery?

All our safes with a codelock have emergency access: 1) an external contact on which an external 9V backup battery can be connected, 2) there is an emergency key, or 3) the battery can be changed from outside.

Safe Locks: What are the lock requirements for each burglary grade?

A safe´s burglary rating determines the minimum amount of time for which a safe must be able to withstand an attack. With regards to the locks specifically, these are classified in ascending security classes going from A through D as per EN-1300 Regulation. Additionally, starting at security grade IV, safes and vaults must contain 2 separate locks.

Safe Locks: Which lock should I choose - Key or Code Lock?

Safes or security cabinets usually come with several locking options. Key and code locks offer the same security level - choose according to your preferences. Most customer choose a code or electronic lock for their safe due to the convenience of not having to deal with a key. All our code locks offer emergency access if the battery runs out.

Safes: Problems with closing or opening the safe?

There can be various reasons why you are not able to close or open the safe, but most of the time the cause is simple to solve.

My safe's lock is branded SG or S&G — can SafeGear provide support?

Locks branded SG or S&G are made by Sargent & Greenleaf, not by SafeGear. Despite the similar names, we are a different company and cannot service or open these locks. For help with an SG / S&G lock, please contact the retailer where you purchased your safe, or Sargent & Greenleaf directly at sargentandgreenleaf.com.

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