Honeywell 621-9940C Serial I/O Module Industrial Control Precision at Your Fingertips
The Honeywell 621-9940C Serial I/O Module features 4 serial ports, supporting RS-232/422/485, with data rates up to 115.2 kbps. It's designed for industrial automation, facilitating communication between PLCs, HMIs, and other devices. Compared to the Honeywell 05701 series, the 621-9940C offers more flexible serial communication options but lacks the digital I/O capabilities found in models like 05701-A-0301. Ideal for environments requiring robust serial connectivity.
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