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The M55155/195J01 part of Concord is a relay module that consists of two single-pole, double-throw (SPDT) relays. This module is manufactured by Opto 22 and is used to create a variety of logical switching functions. This module is designed for use with the Concord Network Controller, which is a centralized monitoring and control solution for industrial systems. The M55155/195J01 can be used to interlock and monitor critical operating conditions, as well as actuate outputs in the system. The module is designed to meet rigorous industrial standards, boasting a high dielectric strength, plus immunity to high voltage transients, ESD, and RFI. Additionally, the module is resistant to moisture and extreme temperatures, making it suitable for harsh environments.