Introduction: This is a fancy photoelectric switch (electronics enthusiasts call it "electronic maze"). Function: It can be used to detect whether there are foreign objects in the infrared light tube (except transparent objects). When there are foreign objects, the photoelectric switch can be triggered to access. Power supply: 5V-16V Port description: + connects to the positive pole of the power supply; i connects to the positive pole of the electrical appliance; - connects to the negative pole of the power supply and the negative pole of the electrical appliance. There is a video in the attachment. Note: I am not blue-green blind! ! ! I used a green LED instead because I ran out of blue LEDs! ! !
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