Combination lock Eura AC-20C7 Black — mechanical code lock for doors, durable design

The Eura AC-20C7 Black is a mechanical combination lock designed for door access control without electrical power. The lock offers keyless entry through a numeric code and is built with a focus on mechanical reliability and durability for everyday use on residential and light commercial doors. Its black finish blends with many door styles while maintaining a compact profile suitable for standard mounting on exterior and interior doors.

Advantages

The mechanical design eliminates the need for batteries or wiring, ensuring continuous operation even during power outages. The numeric keypad provides simple code entry and reduces the reliance on physical keys, lowering the risk of lost or duplicated keys. Constructed from durable materials, the lock resists regular wear and provides stable mechanical performance over time. The black finish offers discreet aesthetics and compatibility with various door finishes.

Suitable for

• Residential front and interior doors that require keyless access
• Small offices and light commercial premises
• Shared facilities where code-based access simplifies management
• Entryways where electrical wiring is impractical or undesirable

Key specifications

• Operation type: mechanical combination (numeric code)
• Power requirement: none (fully mechanical)
• Finish: black
• Compatibility: suitable for standard door thicknesses and mounting for interior/exterior doors
• Access method: keypad code entry (keyless)
• Durability: designed for frequent daily use with wear-resistant components

How to use

Install the combination lock on a compatible door following the manufacturer’s mounting instructions and ensure the lock is securely fitted to the door and frame. Program or set the numeric code according to the supplied instructions before first use and test the code several times to confirm reliable operation. To operate the lock, enter the preset numeric code on the keypad and turn the handle or latch mechanism as described in the mounting guide. Changing the code should be done while following the lock’s reset procedure to avoid accidental lockout.

Usage recommendations

For reliable long-term performance, ensure periodic inspection of mechanical components and keep the keypad free of dirt and debris. Avoid using excessive force on the keypad or handle; if the door or strike plate is misaligned, correct the alignment to prevent undue stress on the lock. Use the lock in environments within normal temperature and humidity ranges; for exterior installations, ensure the door canopy or overhang provides reasonable protection from direct weather exposure.