Why does the light turns on when I connect the infrared switch power?

Why does the light turns on when I connect the infrared switch power?
2024-07-11 15:34:37 Please first check the power supply, make sure the lines are not reversed, in a word, the infrared output to supply should be positive; Second, check the probe, make sure it pointed in the correct deriction with no obstacle in its path.
Tonny12138
