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Pepperl+Fuchs
200958
Diffuse Reflective Sensor, 10-30VDC, 2-12mm Detection Range, PNP, NO, Light On, Teach-in, PC + ABS Housing, Scratch Resistant Mineral Glass Lens Optical Face, M12 5-pin Connector, IP67
$530.88$530.88 -
Pepperl+Fuchs
206277
Print Mark Contrast Sensor, 10-30VDC / 18-30VDC in IO-Link V1.0, 11 mm ± 2 mm Range, Teach In, Light/Dark On, 2 Push-Pull O/P, M12 4 Pin, Nickel Plated Die-Cast Zinc, Plastic Optics, -20 to +60°C Ambient Temp., 41.5 x 49 x 15mm (WHD), IP67
$517.44$517.44 -
Available Now! 
$189.28$189.28 -
Pepperl+Fuchs
225915
Photoelectric LED Triangulation Sensor with Background Suppression for Standard Applications, Miniature Design, 15mm Detection Range, Red Light, Light On, NPN, 2m PUR Cable, 24H x 7.5W x 11.2D mm, IP67
$171.36$171.36 -
Pepperl+Fuchs
235962
Photoelectric Sensor, Diffuse Mode with Rectangular Light Spot for Clear Object Detection, 200mm Range, Red Light, Light/Dark On, Sensitivity Adjuster, DC Version, NPN Output, M8 Plug, Returns of This Item Must Be Approved by Manufacturer
$143.36$143.36 -
Pepperl+Fuchs
253565
Photoelectric DuraBeam Laser Retroreflective Sensor, Flat Design, Space-Saving M2 Mounting, 12-24V, 1.5m Detection Range, Red Light, Dark On, NPN Output, 2m PUR Cable, 25.5H x 12W x 4.1Dmm, IP67, Returns of This Item Must Be Approved by Manufacturer
$247.52$247.52 -
Pepperl+Fuchs
253566
Photoelectric DuraBeam Laser Retroreflective Sensor, Flat Design, Space-Saving M2 Mounting, 12-24V, 1.5m Detection Range, Red Light, Dark On, PNP Output, 2m PUR Cable, 25.5H x 12W x 4.1Dmm, IP67, Returns of This Item Must Be Approved by Manufacturer
$247.52$247.52 -
Pepperl+Fuchs
253568
Photoelectric Triangulation Sensor with Background Suppression (BGS), Flat Design, Space Saving M2 Mounting, 10-30VDC, 15mm Range, Red Light, Light On, NO, PNP Output, 2m PUR Cable, IP67, 25.5 x 12 x 4.1mm (HWD), OBT Series
$138.88$138.88 -
Pepperl+Fuchs
253572
Photoelectric DuraBeam Laser Triangulation Sensor with Background Suppression (BGS), Flat Design, Space Saving M2 Mounting, 12-24VDC, 15mm Range, Red Light, Light On, PNP Output, 2m PUR Cable, IP67, 25.5 x 12 x 4.1mm (HWD), OBT Series
$199.36$199.36 -
$367.36$367.36 -
Pepperl+Fuchs
254271
Photoelectric Retroreflective Sensor, Pulse Ranging Technology (PRT), 10-30VDC, 0-50m Detection Range, M12 4-Pin Connector, 88H x 25.8W x 54.3Dmm, IP67, Returns of This Item Must Be Approved by Manufacturer
$356.16$356.16 -
Pepperl+Fuchs
257817
Photoelectric Retroreflective Sensor, Polarization Filter, Ø12mm Cylindrical M12 Threaded Housing Design, Metal Housing, Front Optical Face, 10-30VDC, 2.5m Detection Range, Red Light, Light/Dark On, 1 NPN Output, 2m Cable, IP67, Returns of
$132.16$132.16
Photoelectric sensors detect the distance, absence or presence of an object. These sensors are great for sensing long distances and detecting most materials.
How Does a Photoelectric Sensor Work?
Generally a photoelectric sensor consists of the following:
- Transmitter - emits the light beam
- Receiver - detects the light beam and converts it to an electrical signal
Photoelectric sensors detect changes in the light beam caused by the presence/absence, movement or properties of an object.
Types of Photoelectric Sensors:
- Through-Beam (Thru-Beam)
- Transmitter and receiver are two separate units that are directly opposite of each other. The sensor detects when an objects breaks the light beam
- Great for long distance detection
- Ideal for conveyors, counting or monitoring door openings
- Retroreflective (Reflective Mode)
- Transmitter and receiver are in one housing; light beam is reflected back by a reflector. Detection is triggered when an object breaks the beam.
- Medium range detection and easier to install than a through beam
- Ideal for package detection and pallet positioning
- Diffuse (Proximity Mode)
- The transmitter and receiver in one housing; the sensor detects light reflected directly off the target object (no reflector needed)
- Best for short range applications
- Ideal for detecting objects on assembly lines, verifying presence or checking fill level
- Specialized Types:
- Background Suppression: Can ignore objects beyond a set distance, focuses close range
- Color or Contrast Sensors: Detects specific colors or contrast differences
- Distance Measuring Sensors: Mesaure the distance to an object
Categories Related to Photoelectric Sensors:
- Stack lights - signal towers visually communicate the data or alerts that the photoelectric sensors are generating
- Smart relays - photoelectric sensors provide input signals which can process the data and control outputs
- Pushbuttons and estops - if your sensor detects a fault, an operator can use a pushbutton to reset the system
- HMIs - HMIs can dispay the data from the photoelectric sensor which allows you to monitor processes