They measure fill levels, heights or sag without contact. They can be used universally and work regardless of color and surface quality. High resolution, long ranges and small blind zones ensure extreme precision. The ultrasonic sensors differ in their voltage or current output and variants with an additional switching output. Design=cuboid, switching output=PNP normally open/closed (NO/NC), connection=plug connector, M8x1 connector, 4-pin, housing material=ABS, active surface, material=PU foam/epoxy resin/glass, range=20...250 mm, switching frequency=25 Hz, approval/conformity=CEEACWEEE, ambient temperature=-25...70 °C, protection class=IP67, repeat accuracy=± 0.15 % FS, operating voltage Ub=20...30 VDC