Refurbished Analog Input module, 8 channels single ended, 4 channels differential, channels are configurable for voltage and current. Can be configured for Current: 0 to 20mA, 4 to 20mA, +/- 20mA; Voltage: +/- 10V, 0 to 10V, +/- 5V, 0 to 5V, 1 to 5V.