The N Series I/O Board is a series of compact, quick-connect I/O expansion boards with an industrial-grade design, offering stability and reliability for high-density I/O expansion. It provides various modules including 32-channel DI, 32-channel DO, 16-channel DI, 16-channel DO, AI input modules, AO output modules, pulse counter modules, RTD temperature sensor acquisition modules, and thermocouple acquisition modules. The N series I/O expansion modules are compatible with EdgeIO modules, NexPLC controllers, EdgePLC controllers, and BL21x series distributed I/O modules.