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Description
The Honeywell TC-MUX021 51404391-375 Serial Interface Module provides reliable serial communication for process automation systems, ensuring stable data exchange and seamless integration with Honeywell controllers.
Specifications
Model: TC-MUX021
Part Number: 51404391-375
Type: Serial Interface Module
Communication Ports: Standard serial channels for industrial connectivity
Compatibility: Honeywell TDC/Experion PKS systems
Installation: Rack-mounted, plug-in design
Dimensions: Standard Honeywell module size
Weight: Approx. 0.5 kg
Power Supply: System-powered, no external battery required
Environmental Compliance: Meets RoHS and industrial automation standards
Features
Reliable Serial Communication: Ensures stable data transfer across automation networks
Seamless Integration: Designed for Honeywell racks and control systems
Durable Construction: Built for long-term industrial use
Easy Installation: Plug-in rack compatibility for quick setup and replacement
Industrial Grade: Suitable for demanding process environments

Quick dispatch from our global inventory to reduce downtime and ensure uninterrupted operations.
All parts are sourced from reputable manufacturers and undergo thorough quality checks.
Extensive stock of industrial automation and discontinued parts, ready for immediate shipment.
Every product — including obsolete items — is covered by a 12-month warranty and 30-day return guarantee.
All product names, trademarks, brands, and logos mentioned on this website are the property of their respective owners.These names and trademarks are used for identification and reference purposes only.We are an independent supplier of industrial automation spare parts.We are not an authorized distributor, dealer, or representative of any manufacturer.Products supplied may include surplus inventory or unused items.We do not claim any affiliation with or endorsement by the original manufacturers.