Multiple Function

Heart Rate Sensor SKU: SEN0203

Introduction
The DFRobot heart rate sensor is a thumb-sized heart rate monitor designed for Arduino
microcontrollers. It includes a Gravity interface, for easy plug-and-play connectivity.
This sensor is a pulse sensor which is developed based on PPG (PhotoPlethysmoGraphy)
techniques. This is a simple and low-cost optical technique that can be used to detect blood
volume changing in the microvascular bed of tissues. It is relatively easy to detect the pulsatile
component of the cardiac cycle according to this theory.
The sensor has two holes that you can use to attach to your belt. You can wrap on your finger,

wrist, earlobe or other areas where it has contact with skin.
The heart sensor has two kinds of signal output mode: analog pulse mode and digital square
wave mode. You can change its output mode using the dial switch. There are many user
scenarios, including education, sport or maker/interactive projects!

Please Note: This product is NOT a medical device and is not intended
to be used as such or as an accessory to such nor diagnose or treat any
conditions.

Specification
 Input Voltage (Vin): 3.3 ‐ 6V (5V recommended)
 Output Voltage: 0 ‐ Vin (Analog), 0/ Vin (Digital)
 Operating current: <10mA
 Dimension: 28 x 24(mm), 1.102″ x 0.945″(in)
Interface Type: PH2.0‐3P