Photoelectric Sensor BEN3M-PFR

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230.00 Grams
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1 unit
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Photoelectric sensors use a beam of light to detect the presence or absence of an object. This technology is used to identify the size and contrast of an object. 4 kinds of general-purpose photoelectric sensor product lines are designed to ensure advanced technology performance combined with optic & electric technology and are widely applied in various fields of industry for its optimized functions, quality, application flexibility, and reliability while remaining strongly competitive with its price among the whole industry. Application areas of photoelectric sensors include industrial automation lines, elevators, parking facilities, logistics services, semiconductor devices, packaging machines, and construction areas.

The BEN series photoelectric sensors with built-in amplifiers are available in universal AC/DC types and DC types. Light ON/Dark ON operation mode switch and sensitivity adjusters are available for easy configuration and set up (except through-beam-types). The specialized sensor IC provides high performance in various user applications.

BEN3M-PFR from Autonics is a Photoelectric Sensor with relay output. The sensing type is retro-reflective with built-in polarization filter, light and dark ON operational modes set by switch, and with a sensing distance of 3m.

BEN3M-PFR from Autonics comes with the following properties:

  • Small and universal voltage type.
  • Easy installation with LED indicators on product.
  • Able to set the operation mode by switch.
  • (Light ON/Dark ON).
  • Status and output LED indication.
  • Built-in IC photo-diode for ambient light and electrical noise.


Product Specifications



  • Sensing type

Retro-reflective (with polarized filter).


  • Sensing Distance



(*1) 0.1-3m.

  • Sensing target

Opaque materials of min Ø60nm.

  • Hysteresis


  • Response time

Max. 20ms.


  • Power supply.

12-24VDC ±10% (Ripple P-P: Max 10%).

  • Power consumption

Max. 4VA.

  • Light source


Red LED (modulated 660nm).

  • Sensitivity Adjustment


  • Operation mode

Selectable light ON/dark ON by control switch.

  • Control output

Relay contact output (contact capacity: 30VDC 3A resistive load, 250VAC 3A resistive load, Relay contact composition: 1C).

  • Relay life cycle

Mechanically: min. 50,000,000.

Electrically: min. 100,000.

  • Light receiving element

Built-in IC type photodiode.

  • Indication

Power indicator: orange,

Operation indicator: green.

  • Connection

Outgoing cable.

  • Noise strength

The square wave noise by noise simulator (Voltage ±240V. period 10ms. Pulse width 1µs).

  • Dielectric strength

500VAC 50/60 Hz for 1 min.


  • Insulation resistance

Min 20MΩ (500VDC mega).

  • Vibration

1.5mm amplitude at a frequency of 10~55Hz in each of X, Y, Z directions for 2 hours (for mechanical), 10min (for malfunction).

  • Shock

500m/s2 (50G) in X, Y, Z direction for 3 times (mechanical).

100m/s2 (10G) in X, Y, Z direction for 3 times (mechanical) (malfunction).

  • Ambient humidity

35~85 RH.

  • Storage humidity

35~85 RH.

  • Ambient illumination

Sunlight: max. 11,000Ꙇx.Incandescent lamp: max. 3000Ꙇx.

  • Ambient temperature

-20~+65◦C (at non-freezing Status).

  • Storage temperature


  • Protection

IP50 (IEC standard).

  • Material
  • Case: ABS, Lens cover: Acrylic
  • Lens: Acrylic.
  • Cable

5P, Ø6mm, length: 2m.

  • Accessory

Reflector (MS-2) Adjustment driver, Fixing bracket, bolts, nuts.

  • Unit weight

Approx. 208g.


Brand Information

“Autonics” is a leading provider of automation solutions from South Korea. They develop and manufacture a wide range of automation products that are marketed worldwide. Their core products include various sensors, controllers, and motion devices, measuring equipment, laser marking systems, connection equipment, and more. Autonics products are trusted and adopted by engineers in various industrial applications and their technology is widely applied in day-to-day automation devices.

With 12 international offices in South Korea, China, Japan, India, Vietnam, Indonesia, Malaysia, Russia, Turkey, USA, Brazil, Mexico, Autonics is able to provide comprehensive automation solutions for their customers across the globe.

Data Sheet

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Warranty Information

One Year Warranty
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