Mechanical Combination Lock Atlo ATLO-KRM-512 — keyless coded door lock

Atlo ATLO-KRM-512 is a mechanical combination lock designed for keyless coded door access. The lock operates entirely by a manual numeric mechanism without electronics or batteries, providing a simple, durable solution for securing doors, cabinets or gates. Its design focuses on reliable mechanical operation and straightforward routine use, enabling controlled access where power-free, tamper-resistant locking is required.

Advantages

The Atlo ATLO-KRM-512 delivers keyless entry through a mechanical code, eliminating dependence on batteries or wiring and reducing maintenance. Its purely mechanical construction offers high resistance to electronic interference and provides consistent performance in varied environmental conditions. The coded mechanism allows resetting and repeated use without additional consumables, while the compact form factor supports installation in confined spaces.

Suitable for

• Residential and utility doors where keyless, battery-free access is preferred
• Storage cabinets, workshops and lockers requiring simple coded security
• Gates, sheds and outdoor enclosures that benefit from a mechanical, weather-tolerant lock
• Shared spaces or offices where code-based access management is sufficient

Key specifications

• Operating principle: mechanical numeric combination
• Power source: none (no batteries, no electronics)
• Installation type: surface-mounted or mortise-ready depending on door preparation
• Material: corrosion-resistant metal components for durability
• Code capacity: multi-digit manual code with changeable combination
• Suitable door thickness: standard residential and commercial door ranges (check model fitment)

How to use

Set or change the combination according to the manufacturer’s instructions prior to first use. To open, enter the numeric sequence on the mechanical keypad and operate the handle or latch provided; the mechanism releases when the correct code is entered. To lock, scramble the digits if applicable and engage the latch or close the door so the mechanism secures automatically. Because the lock has no electronics, routine operation requires only manual input and basic mechanical handling.

Usage recommendations

For reliable performance, verify correct fitment to door thickness and mounting style before installation, and follow the supplied installation and code-change instructions. Periodically inspect moving parts and apply a light lubricant recommended for locks to maintain smooth operation, especially in outdoor or humid environments.