Blood Volume Pulse Sensor. This BVP sensor monitors the relative blood flow in the hands (fingers) with near infrared light. This method is also know as photoplethysmography. (PPG) From the pulse signal the software can compute the heart rate. That way it enables the user to monitor HRV (heart rate variability) in an easy way.  Can be used for the Nexus 4 or 10

We also recommend: NeXus-4, NeXus 10, NeXus-16, Sensors, BVP Sensor for the NeXus 32, BVP Headband Sensor