The RX3i CEP Carrier, a single-slot RX3i carrier with integrated PROFINET network interface and redundant 24 VDC power supply inputs, is the latest one-slot (expandable to two) expansion module from Emerson. It offers use of existing, advanced RX3i or Series 90-30 I/O in a small footprint, with superior availability for maximum uptime, and maximum flexibility to reduce operating costs.