4-Channel, 14 S/s Aggregate, ±80 mV C Series Temperature Input Module. The NI-9211 includes anti-aliasing filters, open-thermocouple detection, and cold-junction compensation for high-accuracy thermocouple measurements. The NI-9211 features NIST-traceable calibration and a channel-to-earth ground double isolation barrier for safety, noise immunity, and high common-mode voltage range.