OMRON E3S-DS30E4 5M [Price]
E3S-DS30E4 5M Use 25-dia. ring to install in 25-dia. panel cutouts. Mounted using either open-type

OMRON E3S-DS30E4 2M [Price]
E3S-DS30E4 2M Mounts in a square cutout and conceals the hole-cut to, simplify installation work.