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Available Now! 
Available Now!Takex
GMR2RSPNN-J
Photoelectric Sensor, Amplifier, Diffuse, PNP, Red LED, IP67, Compact, M8 Connector
$128.78$128.78 -
Available Now! 
Available Now!Carlo Gavazzi
PA18CAR65PASA
Photoelectric, Retro-Reflective, M18 Axial, 10-30VDC, 6.5m Range, PNP NO/NC, 2m Cable
$51.32$51.32 -
Pepperl+Fuchs
267075-100027
Photoelectric, DC, Retroreflective, Laser, 0.2 … 12 m, 2m Cable with Flying Leads, Returns of This Item Must Be Approved by Manufacturer
$192.64$192.64 -
Pepperl+Fuchs
267075-100425
Photoelectric Retroreflective Sensor with Polarization Filter for Clear Object Detection, Returns of This Item Must Be Approved by Manufacturer
$191.52$191.52 -
Pepperl+Fuchs
295670-100012
Photoelectric Retroreflective Sensor, Polarization Filter, LED, H85-2 Reflector Target, 10-30VDC, 0-15m Range, IO-Link, Smart Sensor Type 2.4, 2 Push-Pull 4-in-1 Signal Outputs, M12 x 1, 4-Pin 90° Rotatable Connector, IP67/69/69K, 50.6 x 15
$159.04$159.04 -
Available Now! 
Available Now!Leuze
50133738
Polarized Retro-Reflective Photoelectric Sensor, 0-3m, Laser, Red, PNP, Connector, M8, Metal, 3-Pin, NCNR
$372.00$372.00 -
Takex
CST-R85
Color Sensor, 12-24VDC, ID of Color Ratios and Brightness, 10ms or less, NPN/PNP Changeable Output Mode, IP40
$922.25$922.25 -
Baumer
FPDK 10N5135/S35A
Retroreflective Sensor, Miniature, Pulsed Red LED, 10-30VDC, 3.5m Actual Range Sb, 4m Nominal Range Sn, Potentiometer, 240°, NPN, Light/Dark Operate, M8 4-Pin Connector, 27 x 10.4 x 16.3mm (HWD), Plastic ASA Housing, PMMA Optics, -20° to +6
$253.20$253.20 -
IDEC
S8-PR-3-T51-PP
Photoelectric, Laser Emmission, 1m Range, Retro-reflective for transparent, NCNR
$206.72$206.72 -
Pepperl+Fuchs
267075-0122
Photoelectric DuraBeam Laser Retroreflective Sensor, 10-30VDC, 0-12m Detection Range, IO Link, M8 4-Pin Connector, 41.4H x 13.9W x18.3Dmm, IP67/69/69K, Returns of This Item Must Be Approved by Manufacturer
$192.64$192.64 -
Pepperl+Fuchs
267075-100274
Photoelectric Retroreflective Sensor with Polarization Filter, Miniature Design, 10-30VDC, 0-6m Detection Range, IO Link, 2m Cable, 36.5H x 15W x 26.7Dmm, IP67/69/69K
$108.64$108.64 -
Leuze
50129413
Polarized Retro-Reflective Photoelectric Sensor, 0-3m, Laser, Red, PNP, Cable, M12, Metal, 4-Pin, NCNR
$386.00$386.00
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