The sd series optical level switch uses the principle of light reflection in a prism to sense the absence or presence of a liquid at the point where the sensor is installed in a tank, pipeline or other type of container. Feature: 1.Simple and compact with no moving parts 2.Led indication 3.10-28vdc, 115vac or 230vac powered versions 4.Solidstate npn/pnp or relay output 5.Operating temperatures up to 257°f (125°c) 6.Wide range of use in machine systems for a variety of liquid level detection 7.Unique sd22 design, switch body and tip disconnects
