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Autonics
BX700-DFR
Diffuse Reflective Sensor, 24-240VAC/DC, 700mm Sensing Distance, Opaque/Translucent Target, Infrared LED (940nM), Light On/Dark On Selectable, Relay Contact Output, Terminal Block Connection Type, IP66
$98.00$98.00 -
Pepperl+Fuchs
267075-100535
Photoelectric Sensor, BGS, 60mm Fixed Range, No User Adjustments, Visible Red LED Light Source, 10-30VDC, 2 4-in-1 Outputs Inverted, IO-Link, M8 4-pin Connector, Approvals: UL, c-UL, CE, Returns of This Item Must Be Approved by Manufacturer
$189.28$189.28 -
Available Now! 
Available Now!Takex
F85RN
Fiber Optic Sensor, Dual Display, 12-24VDC, NPN/PNP, Dark On/Light On, M8 Connector, 0.065 - 4.000ms Response Time, IP40, Replacement for F1, F10, F11, F5, F7, F80 Series. Please review specifications for your application.
$120.28$120.28 -
Available Now! 
Available Now!Baumer
FHDK 10P5101/S35A
Miniature Diffuse Sensor, Background Suppression, Pulsed Red LED, 20-120mm Range Tw, Mech. 5-Turn Adj., 10-30VDC, Light/Dark Operate, PNP, <100mA, M8 4-Pin Connector, 27 x 10.4 x 14mm (HWD), Plastic ASA Housing, PMMA Optics, -25 to +65°C, I
$491.70$491.70 -
Available Now! 
Available Now!Takex
FT105BC-CS
Fiber Optic Cable, 2m Length, Diameter: 2.2mm Cable and 1.5mm Core, 45R Bending Radius, Polyethylene Sheath with Plastic Core, -30 to +70°, for CS Color Sensor
$56.53$56.53 -
Pepperl+Fuchs
267075-0119
Photoelectric, DC, Retroreflective, LED, 0.03 … 7.5 m, M8 Quick Disconnect
$114.24$114.24 -
Pepperl+Fuchs
905779
Photoelectric, Light On/Dark On, Retroreflective, IP67, M12 Connector, 3.5m Sensing, DC, Polarized
$115.36$115.36 -
Autonics
BEN300-DDT
Photoelectric Sensor, Diffuse Reflective, 300mm, DC Voltage, Solid-State Output (Transistor)
$67.00$67.00 -
Pepperl+Fuchs
267075-100277
Retroreflective Sensor, Polarization Filter, Miniature Design with Versatile Mounting Options, 10-30VDC, 6m Range, 100mA, Light On/Dark On Changeover Switch, IO-Link Interface, Polycarbonate Housing, PMMA Optical Face, Extended Temperature
$114.24$114.24 -
Baumer
O200.GR-PV1Z.72NV/BX30
Miniature Photoelectric Diffuse Sensor with Background Suppression (BGS)
$210.70$210.70 -
Available Now! 
Available Now!Pepperl+Fuchs
216895
Photoelectric Sensor, Background Suppression, 10-30VDC, 4 Pin M8 Connector, Light On, PNP, Non-Metallic, IP57, Visible Red Beam, ML100 Series
$176.96$176.96 -
Available Now! 
Available Now!Takex
GS20RN-Y6J
Diffuse Reflective Sensor, 12-24VDC, Infrared LED, 300mm Range, NPN, Light On/Dark On Selectable, 2m Black Cable with Flying Lead, IP67
$154.28$154.28
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