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Pepperl+Fuchs
188559
Photoelectric Retroreflective Sensor, DC, Front Optical Face, Light ON/Dark ON, Polar Filter
$126.00$126.00 -
Available Now! 
Available Now!Takex
NA-T20R
Photoelectric Sensor, Power Supply, Thru-Beam, Relay, Red LED, 20000mm Range, Terminal Block
$168.73$168.73 -
Available Now! 
Available Now!Pepperl+Fuchs
267075-0058
Photoelectric, DC, Background Suppression, LED, 5 … 350 mm, M8 Quick Disconnect
$155.68$155.68 -
Available Now! 
Available Now!Baumer
FHDM 12P5001
Diffuse Sensor With Background Suppression-Miniature, 15...300 mm Sensing Distance, Pulsed Red LED, PNP, Mechanical (5 Turn), 2 Meter Cable Length (4 Pin), IP67
$476.40$476.40 -
Carlo Gavazzi
PC50CNR10RP
Photoelectric Retroreflective Sensor, Square, 12-240VDC and 24-240 VAC, 50/60Hz, 10m Range, SPDT NO/NC, Light and Dark Switching, 2m PVC Cable, Modulated, Infrared Light 880nm, 17W x 50H x 50Dmm
$177.33$177.33 -
$108.64$108.64 -
Baumer
OM20-P0120.HH.YUN
Photoelectric Distance Sensor, Laser Point, 16-120mm Range, Analog and Digital Output Signal: 0-10VDC/0-5VDC, 12-28VDC, 50mA, Teach-In Button/IO Link, Pulsed Red Laser Diode, Die-Cast Zinc, M8 4-pin Connector, IP67, -10 to +50°C° Operating
$1,725.60$1,725.60 -
Pepperl+Fuchs
128098
Photoelectric, Light On/Dark On, Retroreflective, M12 Plug, IP67, 0 to 15m Adjustable
$637.56$637.56 -
Baumer
OM30-L0550.HV.TXN
Photoelectric Distance Sensor, 50-550mm, 12-28VDC, RS485, Modbus RTU, Teach-In, Line Beam, Laser Class 2, Pulsed Red Laser Diode, Die-Cast Zinc, M8 4-pin Connector, IP67, -10 to +50°C Operating Temperature, 49 x 40.3 x 13.6mm (HWD)
$1,725.60$1,725.60 -
Pepperl+Fuchs
267075-100034
Photoelectric, DC, Clear Object Retro, LED, 0 … 5 m, M8 Quick Disconnect with 300mm Cable, Returns of This Item Must Be Approved by Manufacturer
$192.64$192.64 -
Pepperl+Fuchs
267075-100257
Diffuse Mode Sensor, Returns of This Item Must Be Approved by Manufacturer
$90.00$90.00 -
Pepperl+Fuchs
267075-100275
Photoelectric Retroreflective Sensor with Polarization Filter, Miniature Design, 10-30VDC, 0-6m Detection Range, IO Link, M8 4-Pin Connector, 43.9H x 15W x 26.7Dmm, IP67/69/69K, Returns of This Item Must Be Approved by Manufacturer
$108.64$108.64
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