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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 -
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$123.20$123.20 -
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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 -
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Available Now!Pepperl+Fuchs
267075-0119
Photoelectric, DC, Retroreflective, LED, 0.03 … 7.5 m, M8 Quick Disconnect
$114.24$114.24 -
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905779
Photoelectric, Light On/Dark On, Retroreflective, IP67, M12 Connector, 3.5m Sensing, DC, Polarized
$115.36$115.36 -
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Available Now!Baumer
FPDK 14P5101/S35A
Retroreflective Sensor, Standard, Pulsed Red LED, 10-30VDC, 7m Actual Range Sb, 7.2m Nominal Range Sn, PNP, Light/Dark Operate, M8 4-Pin Connector, 43 x 14.8 x 31mm (HWD), Plastic (ASA, MABS) Housing, PMMA Optics, -25° to +65°C, IP67
$258.70$258.70 -
$142.63$142.63 -
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$164.64$164.64 -
Pepperl+Fuchs
188559
Photoelectric Retroreflective Sensor, DC, Front Optical Face, Light ON/Dark ON, Polar Filter
$106.40$106.40 -
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
$126.56$126.56 -
Pepperl+Fuchs
267075-100485
Photoelectric Retroreflective Sensor with Polarization Filter for Clear Object Detection, Returns of This Item Must Be Approved by Manufacturer
$179.20$179.20 -
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GSM2RSN
Photoelectric Sensor, Polarized Reflective, NPN, Red LED, 2000mm Range, 12/24VDC, 2M Cable
$124.53$124.53
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