General Electric 437D393 I/O Relay Control Board is a GE-made motherboard-style module that provides 16 relays for input/output control. Identified by part numbers 437D393 and 483C184G, this 16-relay I/O board consolidates multiple input and output channels on a single unit. It serves as the I/O interface within GE equipment, enabling organized signal routing through its 16-relay array.
