Pulse sensor for Raspberry Pi with heart rate monitoring functionalityPulse Sensor is a well-designed plug-and-play heart-rate sensor for .<br> It can be used by students, artists, athletes, makers, and game & mobile developers who want to easily incorporate live heartrate data into their projects.<br> The sensor clips onto a fingertip or earlobe and plugs right into with some jumper cables.<br> It also includes an open-source monitoring app that graphs your pulse in real time.<br> Colour:black&red<br> material:ABS plastic<br> Power: 3-5V<br> Fit for: Raspberry pi<br> Diameter: 16mm<br> Magnification: 330<br> LED Wavelength: 609nm<br> Dimensions:L 220mm x Diameter 16 mm<br> Package Contents:<br> 1 x Pulse Heart Rate Sensor Module<br> Only the above package content, other products are not included.<br> Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.