Because the official site no longer hosts this file, you must use reputable third-party mirrors or manufacturer archives:

⚠️ DIALux 4 is no longer actively developed. The current version is DIALux evo (completely redesigned interface and workflow). However, many professionals still use v4 for its simplicity and compatibility with older projects.

: DIALux evo cannot open DIALux 4 files directly. If you need to maintain or recalculate old projects, keeping a copy of DIALux 4.13.0.2 is essential.

Even with the advancement of Dialux evo, the 4.13.0.2 version holds a permanent place in the industry for several reasons.

Despite being outdated, professionals still use this specific version for: Sports Lighting: