Honeywell Analytics 301-EM-CA1 Controller Type 1 Canada (for use with R123), Gas Detection Network Expansion Module for 301C

Honeywell Analytics 301-EM-CA1 Controller Type 1 Canada (for use with R123), Gas Detection Network Expansion Module for 301C. The Honeywell 301-EM Series Gas Detection Expansion Module are designed for specific refrigerant monitoring applications. They are directly compatible with the ECFX series.