Products in this category: HE 5900 Basic Trays for Mod I/O HE 5910 Fieldbus Coupler CANopen HE 5911 Fieldbus Coupler PROFIBUS-DP HE 5912 Fieldbus Coupler Modbus HE 5914 Fieldbus Coupler Ethernet HE 5920 Digital Input Module 4x24V HE 5921 Digital Input Module 8x24V HE 5922 Digital Input Module 2x230V HE 5925 Digital Output Module 8x24V HE 5926 Relay Module 4xRel HE 5930 Analog Input Module 4xU/I HE 5931 Analog Input Module 4xTC/RTD HE 5932 Analog Input Module 2xStrainGage HE 5933 Analog Input Module 2xTC HE 5934 Analog Input Module mV/TC HE 5935 Analog Output Module 4xU/I