21-Channel C Series VR/Hall Interface Module—The NI‑9752 offers a set of automotive-style analog and digital inputs to interface with standard automotive sensors. The module includes two-channel adaptive variable reluctance (VR) sensor inputs, and two-channel Hall effect sensor or general-purpose digital inputs. You can individually configure each channel using surface-mount components with pull‑up, pull‑down, divide‑, and resistor‑capacitor (RC) lowpass filters.