Controllino Maxi Automation Pure is a freely programmable Arduino standard and Arduino software compatible PLC control for private and industrial use according to standard EN 61010-2-201. Controllino serves as an electronic control unit and is designed for maximum compatibility. The device not only features all common connections but can also be completely programmed from scratch. This means there are virtually no limits to its applications. The Controllino is programmed using the Arduino IDE. This open-source development environment is a C compiler that has basic functions pre-implemented, making programming in C easier. Additionally, there are many libraries available that simplify programming.