DFM5001A1-C8-FLOW SWITCH 50L/MIN AIR N2 NPN 485 C8 12.DFM5001A1-C8 Flow Switch: engineered for precise flow monitoring with a capacity of 50L/min, suitable for air and nitrogen (N2) applications, featuring an NPN output, RS-485 communication, and a compact C8 12-pin configuration.