Yokogawa NCU4*A Network Control Unit 100% Genuine NewYokogawa NCU4*A Interface Module Communication Protocols: Modbus RTU PROFIBUS DP Yokogawa proprietary Input Output Channels: Digital Inputs: 8 Digital Outputs: 8 Analog Inputs: 4 Analog Outputs: 2 Pulse Inputs: 2 Input Voltage Range: Digital: 24 VDC Analog: 10 V, 20 mA Pulse: 24 VDC Output Voltage Range: Digital: 24 VDC Analog: 10 V, 20 mA Isolation Voltage: 1500 Vrms between input output circuits and power supply Operating Temperature: 25C to +70C