KY-039 Finger Detection Heartbeat Sensor Module (IR Optical Pulse Sensor, 3.3V-5V, Analog Output)

The KY-039 Finger Detection Heartbeat Sensor Module is a compact optical pulse sensing module designed to detect heartbeats by measuring changes in blood flow through a fingertip. It uses an infrared LED and a phototransistor to detect variations in light intensity caused by blood circulation, generating an analog output signal that can be processed by a microcontroller. Compatible with Arduino, ESP32, ESP8266, STM32, Raspberry Pi (with ADC), and other development platforms, this module is ideal for educational projects, DIY health monitoring, biomedical experiments, and embedded electronics.

Key Features -

• Optical fingertip heartbeat detection

• Infrared LED and phototransistor sensing

• Analog output signal

• Fast pulse detection

• Compact and lightweight module

• Low power consumption

• Easy microcontroller interfacing

• Simple circuit design

• Ideal for educational and prototype projects

• Suitable for embedded health monitoring

Specifications -

• Product type - Heartbeat Sensor Module

• Module model - KY-039

• Operating voltage - 3.3V to 5V DC

• Output type - Analog Signal

• Detection method - Infrared Optical Sensing

• Typical operating current - Approximately 20mA

• Response time - Fast Pulse Detection

• PCB size - Compact Module Format

• Operating temperature - 0C to 50C

• Mounting type - PCB Module

Applications -

• Heartbeat monitoring

• Pulse detection experiments

• Biomedical projects

• Educational electronics

• Arduino projects

• Health monitoring prototypes

• IoT healthcare devices

• Embedded electronics