Pulse Sensor Heart Rate Sensor Heart Beat PulseSensor for Arduino Raspberry pi black&red Pulse Sensor is a well-designed plug-and-play heart-rate sensor for Arduino._x000D_ It can be used by students, artists, athletes, makers, and game & mobile developers who want to easily incorporate live heartrate data into their projects._x000D_ The sensor clips onto a fingertip or earlobe and plugs right into Arduino with some jumper cables._x000D_ It also includes an open-source monitoring app that graphs your pulse in real time._x000D_ _x000D_ Colour:black&red_x000D_ material:ABS plastic_x000D_ Power: 3-5V_x000D_ Fit for:Arduino Raspberry pi_x000D_ Diameter: 16mm_x000D_ Magnification: 330_x000D_ LED Wavelength: 609nm_x000D_ Dimensions:L 220mm x Diameter 16 mm_x000D_ _x000D_ Package Contents:_x000D_ 1 x Pulse Heart Rate Sensor Module_x000D_ _x000D_ Only the above package content, other products are not included._x000D_ Note: Light shooting 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. _x000D_ _x000D_ _x000D_ _x000D_