I'm looking for recommendations on a beam-break detector. I'm looking for the simplest thing, as I only need to cover like 1 foot.
Now would this normally work with a 'reflective device' on the other end? The reflective device can't be something too fragile, as items will be laid directly on it.
I'm looking for something like a transmitter/receiver setup so I save on power consumption on the transmitter (in a very small space).