The Square D 8881-SC-1 Industrial Control Input Module is a 120 VAC input module intended to interface field signals with compatible Square D automation controllers. As part of Square D's industrial I/O lineup, it provides discrete input sensing for control panels, enabling reliable detection of external device closures and status changes. Model 8881-SC-1 specifies the 120 VAC input variant used within Schneider Electric Square D control architectures to expand a controller’s input capability.
