SBL Series of roller conveyor sensors from Pepperl+Fuchs Inc., Twinsburg, OH, mount between conveyor rollers while providing package detection regardless of package color. Sensors can be directly mounted using throughhole mounting or attached with an optional mounting bracket. Sensing range is adjustable from 40–900 mm. You can cascade up to 25 sensors and connect them to a single power supply. Outputs include PNP and 2/3 way pneumatic valve.