OS21 Series


  • Housing 27 x 8 x 14 mm plastic ABS
  • Infrared light
  • Sensing distance through-beam sensor < 1 m
  • Output type NPN or PNP
  • Output function NO + NC
  • Supply voltage 10 ... 30 VDC
  • LED indicator
  • Protection class IP67
  • Connection 2 m cable


Optical sensors from Elco convince with their compact design, high protection class and modern, industrial look.
Different and long scan lengths as well as the digital or analog output, background suppression, ambient light immunity are just some of the features that make these products unique.
Elco optical sensors - when good products get even better!

Item numbers: OS21-S6, OS21-S6, OS21-EDN6, OS21-EDP6, OS21-ELN6, OS21-ELP6

ELCO 360°

Our all-round service for you!

We offer you a complete product portfolio — from data collection with our Automation products (sensors, encoders, connectors, I/O systems) via data connection with IoT hardware to data collection in our IoTHub and data visualization in the form of Industrial Apps — from our Business Unit Internet of Things. At Elco you get everything from one source!

We supplement our product portfolio with holistic services for you. We accompany and support your projects from start to finish — that's ELCO 360°.


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