BL20 Economy Module, 8 2-wire Analog Inputs U/I resp. 4 2/3-wire PT/NI Inputs, Fieldbus-independent, Electronics and connection technology in one housing, Connectivity: Push-in terminals, Protection class IP20, LEDs indicate status and diagnostic, Electronics galvanically separated from the field level via optocouplers, 8 analog 2-wire inputs U/I, Passive input - External supply, 0 … 20 mA, 4 … 20 mA, -10 … +10 VDC or 0 … +10 VDC, selectable per channel, Alternatively: 4PT/NI inputs (always 2 analog inputs are combined to a PT/Ni 2/3-wire input)