KY-039 Finger Detection Heartbeat Measuring Sensor Module
$ 31.50
Key Highlights Works on 3.3V to 5V DC and connects to any standard Arduino analog pin. Analog output signal changes with each heartbeat pulse detected through finger. Infrared LED and phototransistor detect blood flow change through the fingertip. Compatible with Arduino, ESP32, and STM32 boards through the analog interface.
