I am trying to install a photo eye to use for a lay down bottle sensor.
I wired in the power, it turns on the light on the sensor flags when triggered.
But I’m not abel to trace where the signal is happening on the wiring. It’s a 4 pin and below is the schematic . Someone told me they had to use a relay to get it working something about separate power. But the photo eye should be self contained. So I don’t know why they needed to add extra stuff to get it to work.
Below is the schematic it comes with. Any help in understanding would be greatly appreciated. I can get it to work with the relay. Like the other person suggested I’m just not sure why.