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Available Now! 
Available Now!Takex
NA-M7RF
Polarized Retroreflective Sensor, 24-240VAC/DC Power Supply, 0.03 to 7mm Range, Mirror-Like Opaque Detection, Relay Ouput 1a, Light ON/Dark ON Selectable, Timer Function Selectable, Delay Time: 0.1-5 s, Terminal Block (M3.5 Screw), IP66
$136.85$136.85 -
Available Now! 
Available Now!Takex
NA-M7R
Photoelectric Polarized Retroreflective Sensor, 24-240VAC/DC Power Supply, 0.03 to 7m Range, Mirror-Like Opaque Detection, Relay Output 1a, Light ON/Dark ON Selectable, No Timer, Terminal Block (M3.5 Screw), IP66
$126.65$126.65 -
Available Now! 
Available Now!Pepperl+Fuchs
905779
Photoelectric, Light On/Dark On, Retroreflective, IP67, M12 Connector, 3.5m Sensing, DC, Polarized
$118.72$118.72 -
Pepperl+Fuchs
267075-0119
Photoelectric, DC, Retroreflective, LED, 0.03 … 7.5 m, M8 Quick Disconnect
$117.60$117.60 -
$145.49$145.49 -
$151.68$151.68 -
Pepperl+Fuchs
905793
Photoelectric Retroreflective Sensor with Polarization Filter, 10-30VDC, 3.5m Detection Range, Light On/Dark On, 2-Push-Pull (4-in-1 Outputs), 150mm PVC Cable with M12 4-Pin Connector, IP67
$125.44$125.44 -
Pepperl+Fuchs
188559
Photoelectric Retroreflective Sensor, DC, Front Optical Face, Light ON/Dark ON, Polar Filter
$126.00$126.00 -
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 -
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FX210J
Fiber Optic Cable, Coaxial Reflective, M4 Screw, 135mm Detect, 1 Trans and 9 Receiving Fibers, 1m
$61.50$61.50 -
$347.69$347.69 -
Pepperl+Fuchs
128098
Photoelectric, Light On/Dark On, Retroreflective, M12 Plug, IP67, 0 to 15m Adjustable
$637.56$637.56
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