Honeywell 05701-A-0550 Single-Channel Control Module

Designed for industrial gas detection systems, the Honeywell 05701-A-0550 acts as a reliable nerve center in environments where precision matters. Whether monitoring natural gas pipelines or chemical processing plants, this module handles sensor data, triggers alarms, and maintains communication with larger control networks. Its single-channel design focuses on simplicity without compromising functionality.

In practice, this module shines where space and simplicity matter—think offshore oil platforms needing compact toxic gas monitoring or wastewater treatment facilities tracking methane levels. We regularly pair it with Honeywell’s XNX gas detectors and integrate it into legacy DCS systems. While primarily handling the 05701-A-0550 variant, we’ve also supported installations using older 05701-B-0550 models in retrofit projects.

What sets this module apart? Its dual communication ports allow simultaneous connection to both PLCs and HMIs. The EEPROM-backed configuration survives power cycles without battery backup—a lifesaver during unexpected outages. While not redundant by itself, we’ve seen engineers deploy it in dual-module setups for critical applications. One user noted the front-panel diagnostics saved hours during a false alarm investigation by clearly displaying sensor drift trends.