The Allen-Bradley 1771-1YC Thermocouple Input Expander Module is a DC-powered expansion unit designed to add thermocouple input capability to a compatible Allen-Bradley control system. It is also listed as 1771-IYC in some documentation. This 1771 thermocouple input expander belongs to the 1771 family of I/O modules and serves to extend thermocouple input capability within that system.
