Finger heartbeat detector Ky039

Features:

• Detects heartbeat using IR LED and phototransistor
• Analog signal output for pulse monitoring
• Compatible with Arduino, ESP32, Raspberry Pi, and other microcontrollers
• Small and lightweight design
• Operating voltage: 3V–5V DC
• Built-in LED indication for pulse detection
• Easy interfacing with standard 2.54mm header pins

Applications:

• Heart rate monitoring projects
• DIY medical electronics
• Fitness monitoring systems
• Biomedical experiments
• Arduino and IoT-based health devices