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IDEC
S8-PR-3-T51-PP
Photoelectric, Laser Emmission, 1m Range, Retro-reflective for transparent, NCNR
$202.67$202.67 -
Available Now! 
Available Now!Pepperl+Fuchs
134129
Photoelectric Retroreflective Sensor with Polarization Filter, 12-240VAC/DC, 0-17m Detection Range, Light On/Dark On Switchable, -40 to 60°C (-40 to 140°F) Ambient Temperature, 88 x 25.8 x 65.5mm (HWD), IP67
$173.16$173.16 -
Pepperl+Fuchs
188554
Photoelectric, 18mm, Dark On, DC, Retroreflective, IP67, 6.5m, 2m Cable, NPN, Returns of This Item Must Be Approved by Manufacturer
$92.96$92.96 -
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
$128.80$128.80 -
Pepperl+Fuchs
257818
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, M12 4-Pin Plug, IP67, Retur
$128.80$128.80 -
Pepperl+Fuchs
257819
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 PNP Output, 2m Cable, IP67, Returns of
$128.80$128.80 -
Pepperl+Fuchs
257821
Photoelectric Retroreflective Sensor with 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 PNP Output, M12 4-Pin Plug, IP67
$128.80$128.80 -
Pepperl+Fuchs
267075-0120
Photoelectric Retroreflective Sensor with Polarization Filter, Miniature Design, 10-30VDC, 0-7.5m Detection Range, IO-Link, M8 4-Pin Connector, 41.4H x 13.9W x 18.3Dmm, IP67/69/69K
$114.24$114.24 -
Pepperl+Fuchs
267075-100001
Photoelectric, DC, Retroreflective, LED, 0.03 … 7.5 m, 2m Cable with Flying Leads
$114.24$114.24 -
Pepperl+Fuchs
267075-100002
Photoelectric, DC, Retroreflective, LED, 0.03 … 7.5 m, M12 Quick Disconnect with 300mm Cable
$127.68$127.68 -
Pepperl+Fuchs
267075-100004
Photoelectric, DC, Retroreflective, LED, 0.03 … 7.5 m, M8 Quick Disconnect with 300mm Cable, Returns of This Item Must Be Approved by Manufacturer
$127.68$127.68 -
Pepperl+Fuchs
267075-100009
Retroreflective Sensor, Polarization Filter, Miniature Design, 10-30VDC, 0-7.5m Detection Range, IO Link, 0.30m Cable with M8 3-Pin Connector, 37.1 x 11 x 21.5mm (HWD), IP67/69/69K, Returns of This Item Must Be Approved by Manufacturer
$127.68$127.68
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