If you have questions about our products, Fill out the form below and we will answer any questions you have. Tips: Fields marked with*are required. ABB 1MRK002122-ABr08 Binary I/O Module Introduction The ABB 1MRK002122-ABr08 Binary I/O Module is an industrial-grade digital interface module designed for reliable signal acquisition and output control in ABB protection, control, and substation automation systems. It is typical *Your Name: *Your Email: *Your Name: *Vdcode: Submit