500 Series - Keylex Locks

Keylex Digital Locks | 500 Series | Standard Duty

In the world of access control, where reliability meets simplicity, the Keylex 500 mechanical digital lock from Relcross Door Controls stands out as a pinnacle of Japanese engineering excellence. The Keylex 500 series offers robust, battery-free security solutions designed for medium-duty installations. Perfect for internal doors in commercial, institutional, and residential environments, this lock combines timeless mechanical precision with modern convenience, ensuring smooth operation without the complications of electronics or wiring.

At its core, the Keylex 500 features a narrow-stile design that fits effortlessly on timber or composite doors with stile widths as narrow as 80mm, making it versatile for a wide range of applications. Its adjustable 60/70mm backset and lever-handle operation (in the K500L variant) provide smooth, intuitive access, while the slipping clutch mechanism offers built-in protection against forced entry or vandalism. With over 4,000 customisable code permutations—easily scrambled for added security—and support for 3- to 6-digit sequences, users enjoy flexible, code-only entry from the outside, paired with free egress from within for enhanced safety.