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EX-20 photoelectric sensor

Ultracompact photoelectric sensors with side sensing and front sensing type.
EX-20 photoelectric sensor shadow

Ultracompact photoelectric sensors (side sensing)

Using a single chip optical IC we created the powerful EX20 sensors, which are among the smallest photoelectric sensors worldwide. In spite of their miniature size, the sensors incorporate a sensitivity adjuster. Since a red LED dot light source is used, alignment and confirmation of the sensing position is easy, even if very tiny objects have to be detected.


  • Miniature construction
  • Response time only 0.5ms
  • Red LED
  • New: up to 35% less power consumption
  • New: improved ambient light immunity
  • Adjustable sensitivity
  • Thru-beam
  • Diffuse reflective
  • Sealed to IP67
  • 2 indicator LEDs


  • Slit masks
  • Reflectors
  • Mounting bracket

Ultracompact photoelectric sensors (front sensing)

EX-20 series sensors expand our innovative and super slim photoelectric sensors which combine high performance and miniature design. EX-20 sensors can be fastened with M3 screws. Moreover, metal inserts have been provided in the mounting holes, thus the sensor will not be damaged even if the screws are overtightened.


  • Response time only 0.5ms
  • Red LED
  • New: up to 35% less power consumption
  • New: improved ambient light immunity
  • Thru-beam
  • Diffuse reflective (fixed focus)
  • Sealed to IP67
  • Two-color indicator LED


  • Slit masks
  • Mounting brackets
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Typical applications

EX-20 applications
  • Checking protrusion of wafer
    The ultra compact photoelectric sensor EX-23 has a sufficiently long sensing range of 2m. Further, its visible red LED beam makes beam alignment very easy.
  • Detecting tape feeder cassette out of position
    Ultra compact in size with an ample sensing range of 2m, ideal for monitoring tape feeder cassettes that are out of position.
  • Detecting fill-up of parts in feeder
    The sensor setting can be finely adjusted since a universal sensor mounting bracket is available, with which the height and the angle of the sensor can be freely adjusted.


Name File Type Size 1 Date Language
PDF Brochure Capteurs Catalog, Shortform 32.5 MB 13.09.2021 French
PDF Catálogo Resumen Sensores Data sheet 30.6 MB 28.04.2021 Spanish
PDF Data sheet EX-20 Data sheet 1.7 MB Italian
PDF Data sheet EX-20 Data sheet 4.4 MB English
ZIP EX-20 2D Data CAD 26.4 KB 01.06.2007
PDF EX-20 Betriebsanleitung Manual 1.1 MB 01.12.2011 German
PDF EX-20 Manual de Instrucciones Manual 1 MB 01.12.2011 Spanish
PDF EX-20 Manuale di istruzione Manual 1.1 MB 01.12.2011 Italian
PDF EX-20 Manuel d'instructions Manual 1.1 MB 01.12.2011 French
PDF EX-20 Series Instruction Manual, MJECK-EX20 Manual 168.6 KB 01.07.2016 English
PDF Programma Sensori Catalog, Shortform 2.6 MB 11.01.2021 Italian
Raccolta Applicazioni Sensori Data sheet 24.2 KB 20.12.2018 Italian
PDF Sensori Fotoelettrici Guida tecnica Data sheet, Technical information 1.9 MB Italian
PDF Senzory - Zkrácená verze Catalog, Shortform 10.1 MB Czech
PDF Short Form Sensors for Factory Automation Catalog, Shortform 32.7 MB 08.07.2021 English
Übersicht Sensoren Catalog, Shortform 0 B 30.01.2020 German

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