Description: 1. KY-039 is a non-invasive finger clip sensor designed for detecting heartbeats through the body's peripheral circulation. It utilizes an LED light and phototransistor to measure pulse rate. 2. Connection: This sensor can be easily connected to any microcontroller or Arduino board via analog input pins. The LED and phototransistor are separated by a thin rubber diaphragm in the sensor. 3. Operation: When blood flows through the finger, it changes the resistance of the photosensitive material causing a pulse signal that can be measured. This sensor does not require an external power source as the LED and phototransistor draw power from the input they are connected to. 4. Versatility: KY-039 is widely used in various projects such as heart rate monitors, biofeedback systems, fitness projects, medical applications, and educational purposes for teaching students about electronics and sensors. 5. Easy Calibration: The sensor does not require any complicated calibration process. Users
| Specification | Details |
|---|---|
| Operating Principle | Optical heart rate detection |
| Sensitivity | Adjustable user-friendly interface |
| Heart Rate Range | 20-240 beats per minute (bpm) |
| Accuracy | ±5% accuracy |
| Sampling Rate | Up to 100 Hz |
| Power Supply | 3.3V - 5V DC power source required |
| Current Consumption | Typical: 8mA Max: 10mA |
| Dimensions | 30 x 20 x 15 mm (L x W x H) |
| Weight | 20g |
| Operating Temperature | -40°C to 85°C |
| Storage Temperature | -50°C to 125°C |
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