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Takex
UX-R2
Photoelectric Sensor, Extreme Mini, Diffuse Reflective, NPN, Thru-Beam, Straight, Miniature, Cable, IP67
$98.60$98.60 -
Pepperl+Fuchs
188552
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 -
Pepperl+Fuchs
210545
Photoelectric Retroreflective Sensor with Polarization Filter, Miniature Design, 10-30VDC, 5m Detection Range, PNP Output, 2m Cable, PC (Polycarbonate) Housing, PMMA Optical Face, 31 x 11 x 20mm (HWD) IP67, Non-Cancellable, No Returns
$118.72$118.72 -
Pepperl+Fuchs
267075-100102
Photoelectric, DC, Thru-Beam (Receiver), LED, 0-12m, M8 Quick Disconnect
$87.36$87.36 -
Pepperl+Fuchs
267075-100106
Photoelectric Thru-Beam Sensor (Receiver), Returns of This Item Must Be Approved by Manufacturer
$96.32$96.32 -
Pepperl+Fuchs
267075-100114
Photoelectric, DC, Thru-Beam (Receiver), Laser, 0-20m, M8 Quick Disconnect, Returns of This Item Must Be Approved by Manufacturer
$103.04$103.04 -
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 -
Pepperl+Fuchs
295670-100156
OBT650-R201-2EP-IO-V1, Photoelectric Sensor, BGS, 650mm, LED, 10-30VDC, 4-in-1 Output, IO-Link, M12
$193.76$193.76 -
$335.00$335.00 -
Leuze
50129375
Diffuse Sensor with Background Suppression, 10-30VDC, 0.005-0.45m Range, Red LED, PNP, Light/Dark Switching, M8 Metal Male 4-Pin Connector, 11.4 x 34.2 x 18.3mm WHL, IP67/IP69K
$213.00$213.00 -
$56.00$56.00 -
Available Now! 
Available Now!Takex
DL-S200P
Photo Sensor, Fixed Field Reflective, Relay, 200/1000mm, Infrared LED, Terminal Block
$112.79$112.79
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