What is pulse rate sensor?

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Tags

1. #directly
2. #principle
3. #output
4. #through
5. #heart
6. #connected
7. #measure
8. #digital
9. #unison
10. #works
11. #working
12. #beats
13. #light
14. #finger
15. #blood
16. #microcontroller
17. #detector
18. #modulation
19. #flashes
20. #pulse
21. #features
22. #minute