The Omron NX-AD4204 Machine Automation Controller is a precision 2-point differential Analog I/O Unit for 4β20 mA input with 1/30000 resolution and Β±0.1% full-scale accuracy. It supports high-speed 10 ΞΌs/point conversion and selectable Synchronous or Free-Run refreshing for noise-immune current measurement. Manufactured by Omron, part of the Omron Programmable Logic Controller (PLC) range, available under the Omron NX Series.