2-way tracking sensor module black and white line photoelectric detection TCRT5000



TCRT5000 infrared emitting diode constantly launch infrared sensor, the infrared ray is emitted when reflected back were not reflected or but strength is not big enough, the light activated triode has been in the off state, the output end of the module at this time as the low level, indicating diode has been put out state; When the detected object appears in the detection range, the infrared ray is reflected back and the intensity is large enough. The photosensitive triode is saturated, and the output end of the module is high level, indicating that the diode is lit.