The BW40-10 is a photoelectric area sensor with a 40mm detection width and 10 beams, used for presence detection across a defined zone — typical for part-through or edge-guiding on packaging lines or conveyor infeed sections where a single-point sensor would miss a gap.
The 40mm detection width and 10-beam array mean the sensor covers a 40mm span with a beam spacing that catches objects as small as a finger or a box edge — useful for reliable detection without mechanical contact.