±10 V, 250 kS/s, 16-Bit, 32-Channel C Series Voltage Input Module. The NI-9205 performs single-ended or differential analog inputs, with four programmable input ranges for each. It is an effective combination of channel count and speed at a low price for an economical multifunction system. You can choose from four programmable input ranges. To protect against signal transients, the NI-9205 includes up to 60 V of overvoltage protection between input channels and common. In addition, the NI-9205 also includes a channel-to-earth ground double isolation barrier for safety, noise immunity, and high common-mode voltage range. It is rated for 1,000 Vrms transient overvoltage protection.