The NI 9437 digital input module has eight channels of 24 VDC to 250 VDC digital input signals and features ratiometric thresholds that automatically adjust to 2/3 of the user supply voltage. The NI 9437 is well suited for direct connection in rail (72 V, 96 V, 110 V) and power (110 V, 125 V, 220 V, 250 V) applications along with a wide array of industrial and automotive switches, transducers, and devices with high-voltage input needs.

Recommended Accessories
-NI 9927 strain relief and operator protection 

Optional Accessories
-NI 9936 extra screw-terminal block (quantity 10)
-NI 9980 extra spring-terminal block (quantity 10)
Note: The NI 9980 is not compatible with the NI 9927 and must be used with low or nonhazardous voltages or installed in a properly rated enclosure. 

Box Contents
-1 NI 9437 C Series module
-1 NI 9437 Operating Instructions and Specifications manual
-1 NI 9936 10-position connector