Click PLCs offer discrete and analog I/O modules, including 24-Vdc, combination, discrete modules with eight-point DC input/eight-point DC sinking or sourcing outputs, and a four-point DC input/four-point relay output. Four-channel, 24-Vdc, analog input modules with 13-bit resolution include 0-20 mA and 0-10 V input versions; 12-bit resolution, four-channel outputs in 4-20 mA and 0-10 V versions. Also available is a four-channel input/two-channel output module in current and voltage versions with 13-bit resolution inputs and 12-bit resolution outputs.