SM123 Series


The new SM123 series offers a complete line of subminiature amplified photoelectric sensors, ideal for mounting in reduced spaces or in presence of  particular mechanical obstacles. The extremely compact dimensions do not limit the detection performances, that suit most of the applications on automatic machinery for packaging, assembling, printing and so on, such as in automatic distribution and vending machines. The SM1 models are 20 mm fixed focus proximity that, thanks to the thin housing with side optics, represent a valid alternative to fibre-optic systems. The SM2 models present instead an ultra-flat format with a thickness inferior to 5 mm and offer a 170 mm diffuse proximity, as well as a through beam with an operating
distance reaching 1.2 m. The SM3 models also present a thin housing with lateral optics, but offer a 50 cm coaxial polarised retroreflex or a 1.2 m through beam optic function. All the subminiature sensors of the SM123 series have visibile red emission and are available in the NPN or PNP
versions, both with 3 wires 2 m cable connection. The plastic ABS housing guarantees an IP67 protection degree.

Features & Benefits

  • 20 and 170 mm proximity, 50 cm polarised retroreflex and 1.2 m through beam
  • Thin housing with side optics or ultraflat format
  • Visible red emission on all models for easy alignment
  • Amplified NPN or PNP output with 3-wire connection


  • Automotive
  • Beverage & Bottling
  • Packaging lines

The product series offers the following models:




Order Number

SM1-PR-2-D00-PL 20 mm fixed focus proximity PNP - light 95B000100
SM1-PR-2-D00-NL 20 mm fixed focus proximity NPN - light 95B000110
SM2-PR-2-FG00-PD 1.2 m through beam PNP - dark 95B000200
SM2-PR-2-FG00-ND 1.2 m through beam NPN - dark 95B000210
SM2-PR-2-D00-PL 170 mm diffuse proximity PNP - light 95B000220
SM2-PR-2-D00-NL 170 mm diffuse proximity NPN - light 95B000230
SM3-PR-2-FG00-PD 1.2 m through beam PNP - dark 95B000300
SM3-PR-2-FG00-ND 1.2 m through beam NPN - dark 95B000310
SM3-PR-2-B00-PL 50 cm coaxial polarised retroreflex PNP - light 95B000320
SM3-PR-2-B00-NL 50 cm coaxial polarised retroreflex NPN - light 95B000330
SM3-PR-2-B00-PD 50 cm coaxial polarised retroreflex PNP - dark 95B000340
SM3-PR-2-B00-ND 50 cm coaxial polarised retroreflex NPN - dark 95B000350

The following accessories are available to simplify installation and optimize product performances:



Order Number

ST-5036 L-shaped fixing bracket for SM1 and SM3 95ACC5720
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