8-channel Isolated Analog Input Module With High Voltage Protection. The M-2017 is an Analog Input module that includes 8 differential Analog Input channels. The module provides a programmable input range on all Analog Input channels, and each channel can be configured for an individual input range, providing a high overvoltage protection of 240 Vrms and 50mA overcurrent protection at 110 VDC/VAC. Voltage and current input is DIP switch selectabl..