Honeywell FSC · Enhanced Communication Module 10024/H/I Enhanced Communication Module An Enhanced Communication Module for Honeywell FSC systems, combining an internal Central Part communication interface with an isolated RS-422 / RS-485 communication interface. Honeywell 10024/H/I PDF, manual and datasheet reference for identification, communication interface selection and maintenance planning. Honeywell FSC Enhanced Communication Module Type Number 26900 Rack Space 8 TE / 3