KY-039 Finger Detection Heartbeat Measuring Sensor Module
The KY-039 Finger Detection Heartbeat Measuring Sensor Module is a compact optical pulse detection module designed to measure heartbeat signals by detecting blood flow changes in the fingertip. This sensor uses an infrared LED and phototransistor-based sensing method to detect pulse variations and provides an output signal that can be processed by microcontrollers. It is widely used in Arduino health monitoring projects, biomedical experiments, wearable electronics, and educational electronics applications. Available at Directronics, the KY-039 Finger Detection Heartbeat Measuring Sensor Module is ideal for students, hobbyists, makers, educators, and engineers working on biometric and sensor-based projects. (Directronics)
Features:
• Optical Heartbeat / Pulse Detection Sensor
• Uses Infrared LED and Phototransistor Technology
• Detects Finger Pulse Variations
• Compact and Lightweight PCB Design
• Simple 3-Pin Interface
• Analog Pulse Signal Output
• Low Power Consumption
• Easy Integration with Microcontrollers
• Compatible with Arduino, ESP32, STM32, and Raspberry Pi
• Suitable for DIY Biomedical Projects
• Beginner-Friendly Sensor Module
Why Choose KY-039 Finger Detection Heartbeat Sensor Module?
• Provides an easy way to add heartbeat sensing to electronic projects
• Simple interface allows quick connection with development boards
• Useful for learning pulse sensing and signal processing
• Compact design suitable for wearable and portable projects
• Cost-effective solution for educational and prototype applications
• Ideal for students, hobbyists, makers, and professionals
Applications:
• DIY Heart Rate Monitoring Projects
• Arduino Biomedical Experiments
• Pulse Waveform Detection
• Wearable Electronics Projects
• Fitness Monitoring Prototypes
• IoT Health Monitoring Systems
• Educational STEM Projects
• Human Body Sensor Applications
• Robotics and Human Interaction Projects
• Embedded System Development
Technical Specifications:
• Product Type: Finger Heartbeat Detection Sensor Module
• Module Name: KY-039
• Sensor Technology: Optical Pulse Detection (PPG)
• Detection Method: Infrared LED + Phototransistor
• Operating Voltage: 3.3V–5V DC
• Output Type: Analog Pulse Signal
• Interface Pins: VCC, GND, Signal
• Sensor Input: Fingertip Placement
• Detection Principle: Blood Flow Light Variation Detection
• PCB Type: Compact Sensor Module
• Compatible Controllers: Arduino, ESP32, STM32, Raspberry Pi
• Operating Temperature: Model Dependent
Package Includes:
• 1 × KY-039 Finger Detection Heartbeat Measuring Sensor Module
Related Products:
• MAX30102 Heart Rate and Pulse Oximeter Sensor
• AHT10 Digital Temperature & Humidity Sensor
• Arduino Uno
• ESP32 Development Board
• Raspberry Pi Pico W
• OLED Display Module
• Jumper Wire Bundle (40Pcs)
• IoT Sensor Modules
Why Buy from Directronics?
Directronics provides quality development boards, communication modules, sensors, electronic components, robotics modules, power management solutions, and IoT products for students, makers, educational institutions, startups, and industry professionals. Explore our complete range of Arduino, ESP32, ESP8266, Raspberry Pi, power modules, motor drivers, programming tools, and embedded development products to bring your ideas to life.
Note:
Product images are for illustration purposes only. Actual module design, PCB layout, and component placement may vary depending on the manufacturing batch. The KY-039 is intended for educational and prototype applications and is not a medical-grade heart rate monitoring device. For accurate readings, keep the finger steady, reduce ambient light interference, and apply proper signal filtering in software.