Infrared reflection sensor optocoupler TCRT5000
Product information:
Small reflection sensor of the TCRT5000 type, for example to make a line follower yourself.
The TCRT5000 sensor has an infrared LED and an infrared receiver transistor next to each other. The emitted infrared light is reflected and received by the transistor. By looking at the difference in reflection you can detect a line or the line on the rotating disk of the electricity meter (see website link).
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