Rievtech HMI Panels | Economic HMI RTS4070CE, RTS4097iE, RTS4043C, RTS4070C and RTS4097C Inspired by consumer-oriented products Rievtech HMIs are facing new challenges. They are becoming more than just a functional add-on. Human machine interfaces as integral part of the user experience have to be user-friendly, intuitive and flexible interfaces offering at the same time state-of-the art look and feel. 15