Door Sign_Reminder turn the light off_GERMAN ONLY

This 3D model may look simple, but it solved a real-life problem for me.

The Problem:
Tenants in our building often forgot to turn off the hallway light, leading to unnecessary energy consumption.

The Solution:
A reminder sign mounted outside the apartment door, prompting residents to switch off the light before entering their home.

The model was created using the Makerlab Lightbox Generator Tool and adjusted to be a clean, flat sign that’s easy to print and install. 

The sign text is in German, but the idea may still be helpful to others with the same issue—or it could serve as inspiration for your own version in another language.