Four To Twenty: mAV Converter is a utility application designed for iPhone that facilitates the conversion of electrical signals, specifically those in the 4-20mA range, to a corresponding process signal. This tool is particularly useful for professionals working with industrial sensors and control systems, allowing for precise calculations and adjustments in various applications, such as pressure measurements.

The application offers a variety of preset signal inputs and process signal outputs, enabling users to select from common configurations or input custom values as needed. Additionally, Four To Twenty: mAV Converter features eight different themes, allowing users to customize the interface according to their preferences, enhancing the overall user experience.