# Gravity: Heart Rate Monitor Sensor For Arduino

**Type:** Product page · **SKU:** SEN0203 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/gravity-heart-rate-monitor-sensor-for-arduino.html ([markdown](https://core-electronics.com.au/gravity-heart-rate-monitor-sensor-for-arduino.html.md))

The DFRobot heart rate sensor is a thumb-sized heart rate monitor designed for Arduino microcontrollers.

## Pricing

- **Price:** $26.90 (inc GST) — $24.45 AUD, exc GST
- **Quantity discounts:** 6+ $23.24 (exc GST) · 12+ $22.25 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 250 more in 8–12 days.

## Description

The DFRobot heart rate sensor is a thumb-sized heart rate monitor designed for Arduino microcontrollers.

This sensor is a pulse sensor which is developed based on PPG ([PhotoPlethysmoGraphy](https://en.wikipedia.org/wiki/Photoplethysmogram)) 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.

To ease the difficult of using this sensor, a [Gravity ](https://www.dfrobot.com/gravity)Interface is adapted to allow plug&play. The [Nano I / O Shield For Arduino Nano](https://core-electronics.com.au/nano-i-o-shield-for-arduino-nano.html) is the best match for this sound senor connecting to your [Arduino](https://www.dfrobot.com/index.php?route=product/category&path=35_104) or other microcontroller. As this sensor can work at 3.3V which make it compatible with [Raspberry Pi](https://core-electronics.com.au/raspberry-pi.html), [intel edison](https://www.dfrobot.com/index.php?route=product/category&path=184_187), joule and curie.

![Gravity: Heart Rate Monitor Sensor For Arduino Demo Project 2](https://core-electronics.com.au/attachments/localcontent/DFRobot_Heart_Rate_Sensor_6614944d750.jpg)

![Gravity: Heart Rate Monitor Sensor For Arduino Demo Project 1](https://core-electronics.com.au/attachments/localcontent/DFRobot_Heart_Rate_Sensor_Arduino_Connection_5476075cdee.jpg)

NOTE: 
1\. This product is NOT a professional medical device and should not be used to diagnose or treat medical conditions. 
2\. This sensor is designed to work when the user is not moving. If used while moving it will give inaccurate results.

## 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
 
## Documents

- [Product WIKI](https://wiki.dfrobot.com/Heart_Rate_Sensor_SKU__SEN0203)
- [Related Documents ](https://wiki.dfrobot.com/Heart_Rate_Sensor_SKU__SEN0203#target_5)
 
## Parts List

- Heart Rate Monitor Sensor For Arduino x1
- Wrist belt x1
- PH2.0-3P cable x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/s/e/sen0203.jpg)