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Baumer
FPDK 10N5135
Retroreflective Sensor, Miniature, Pulsed Red LED, 10-30VDC, 3.5m Actual Range Sb, 4m Nominal Range Sn, Potentiometer, 240°, NPN, Light/Dark Operate, 2m 4-Pin Cable, 27 x 10.4 x 16.3mm (HWD), Plastic ASA Housing, PMMA Optics, -20° to +65°C,
$267.29$267.29 -
Baumer
FPDK 10P5130
Retroreflective Sensor, Miniature, Pulsed Red LED, 10-30VDC, 3.5m Actual Range Sb, 4m Nominal Range Sn, PNP, Light/Dark Operate, 2m 4-Pin Cable, 27 x 10.4 x 16.3mm (HWD), Plastic (ASA) Housing, PMMA Optics, -20° to +65°C, IP65
$257.20$257.20 -
Available Now! 
Available Now!Takex
GS20SN
Photoelectric, NPN, Diffuse Reflective, 300mm Rng, 12-24VDC, Light ON/Dark ON, 2m Cable, IP67
$116.45$116.45 -
Baumer
O500.GR-GW1T.72O
Diffuse Sensor, Background Suppression, 10-30VDC, 60-550mm Sensing Distance Tw, 30-600mm Sensing Range Tb, Pulsed Red LED, 630 nm, Push-Pull, qTeach, Light/Dark Operate, M12 4-Pin Connector, Plastic Housing, PMMA Optics, 45 x 18 x 32mm (HWD
$213.80$213.80 -
Baumer
O500W.RP-GW1B.PVO
Retroreflective Sensor, Polarization Filter, Washdown Design, 10-30VDC, 7.5 Actual Range Sb, 8m Nominal Range Sn, Pulsed PinPoint LED, 630 nm, Push-Pull, qTeach/Remote, Light/Dark Operate, M12 4-Pin Connector, Stainless Steel Housing, PMMA
$258.80$258.80 -
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 -
Available Now! 
Available Now!Baumer
FHDM 12P5001/S35A
Diffuse Sensor With Background Suppression-Miniature, 15...300 mm Sensing Distance, Pulsed Red LED, PNP, Mechanical (5 Turn), M8 Connector (4 Pin), IP67
$461.40$461.40 -
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 -
Available Now! 
Available Now!Pepperl+Fuchs
295670-100005
Photoelectric Diffuse Sensor, LED, 1.4m, 10-30VDC, 4-in-1 Output, IO-Link, M12
$95.63$95.63 -
Baumer
O500W.SP-GW1J.PVO/H002
SmartReflect Light Barrier, Washdown Design, Standard Object Detection, 10-30VDC, 60-600mm Background Position Sde, Pulse PinPoint LED, 630 nm, Push-Pull, Teach-In and IO-Link, Light/Dark Operate, M12 4-Pin Connector, Stainless Steel Housin
$379.40$379.40 -
Pepperl+Fuchs
267075-100102
Photoelectric, DC, Thru-Beam (Receiver), LED, 0-12m, M8 Quick Disconnect
$87.36$87.36
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