-
Available Now! 
Available Now!Pepperl+Fuchs
909112
ML17-8-450/115B/136 | Limited Stock Savings: 1 unit available at this price
Photoelectric, Light On/Dark On, Diffuse Mode, IP67, 150mm Cable, 10-450mm
$125.43$125.43 -
Available Now! 
Available Now!Pepperl+Fuchs
905793
ML17-54/115B/136
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 -
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Available Now!Pepperl+Fuchs
188552
GLV18-6/25/102/159, Non-Cancellable, No Returns, Advertised Pricing Limited to MWA Stock!
Retroreflective Sensor, M18 Threaded, 10-30VDC, 6.5m Detection Range, NPN, Light On, 4 LED Indicators for 360° Visibility, M12 3-Pin x 1 Connector, PC Housing, PMMA Optical Face, -25 to +60°C (-13 to +140°F) Ambient Temperature, IP67, NCNR
$109.62$109.62 -
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Available Now!Pepperl+Fuchs
205234
RLK31-8-2500-IR/31/115
Photoelectric, Light On, AC/DC, DiffuseIP67, 2500mm, 2m Cable
$151.68$151.68 -
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267075-0069
OBT350-R100-2EP-IO-0.3M-V1
Photoelectric, DC, Background Suppression, LED, 5 … 350 mm, M12 Quick Disconnect with 300mm Cable
$163.52$163.52 -
Available Now! 
Available Now!Takex
GS20RSN
Mini-G Series
Photoelectric, NPN, Diffuse Reflective, 400mm Rng, 12-24VDC, Light ON/Dark ON, 2m Cable, IP67
$119.43$119.43 -
Available Now! 
Available Now!Takex
NA-M7RF
NA Series
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
NA Series
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 -
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Available Now!Takex
MC-U2RTC
Color Mark Sensor, NPN/PNP, Thru-Beam, Red, Red LED, U-Shaped, Light ON/Dark ON, IP67
$189.55$189.55 -
Available Now! 
Available Now!Takex
NA-R10F
NA Series
Diffuse Reflective Sensor, 24-240VAC/DC ±10% 50/60Hz Power Supply, 1m or Less Range (200x200mm White Drawing Paper), Opaque Translucent Detection Object, Relay Output 1a, Light ON/Dark ON Selectable, Timer Function Selectable, Delay Time: 0
$133.88$133.88 -
Available Now! 
Available Now!Leuze
50137154
PRK3C/6G-M8 | Limited Stock Savings: 1 unit available at this price
Polarized Retroreflective Photoelectric Sensor, 10-30VDC, 5m Range
$133.15$133.15 -
Autonics
BRQT400-DDTA
Sensor, Photoelectric, Diffuse Reflective, 400mm Sensing Distance, Stainless Steel Cylindrical Case, Light ON/Dark ON Selectable, NPN Output, 10-30VDC
$173.00$173.00
Photoelectric sensors detect the distance, absence or presence of an object. These sensors are great for sensing long distances and detecting most materials.
Additional Sensor Categories:
Proximity | Ultrasonic | Pressure | Temperature | Level | Tilt
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