It uses TCRT5000 infrared reflection sensor whose infrared emitting diodes are constantly emitting infrared rays.
This module provides a versatile infrared detection system solutions for automation machinery devices.
When the infrared emitted is not reflected back or is not high enough, the infrared receiving tube is in the off state and module outputs low , while indicating diode is off.
When object is in detecting range, infrared will be reflected back with high , the module outputs high and indicating diode is on.
Widely used for electricity meter pulse data sampling, fax machine paper detection, obstacle detection, black and white line detection.
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