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 AI931 Analog Input Modules Introduction The ABB AI931 Analog Input Modules are industrial-grade signal acquisition units developed for ABB’s S800 I/O automation platform. These modules convert analog current signals from field transmitters and sensors into precise *Your Name: *Your Email: *Your Name: *Vdcode: Submit