The technical bulletin outlines the development and implementation of Colmac Coil's HygenAir™ A+H Hygienic Air Handler Controller Interface, designed to meet the ANSI/ISA-101.01-2015 standards for Human Machine Interfaces (HMI) in process automation systems. It highlights key principles such as consistency of design, situational awareness, and user hierarchy, ensuring safer and more efficient process control operations. The bulletin emphasizes the interface's role in maintaining optimal processing conditions for food processors, meeting strict USDA requirements by managing temperature, pressure, humidity, and cleanliness within processing rooms.