-
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NA-R10
Photoelectric Sensor, Power Supply, Diffuse, Reflective, Relay, IP66, Terminal Block, 1M, Range
$123.25$123.25 -
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NA-R10F
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 -
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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 -
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GS20SPN
Photoelectric Sensor, Diffuse Reflective, PNP, Infrared LED, 300mm Range, 12/24VDC, Cable
$119.43$119.43 -
Takex
GS20RSN
Photoelectric, NPN, Diffuse Reflective, 400mm Rng, 12-24VDC, Light ON/Dark ON, 2m Cable, IP67
$119.43$119.43 -
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GS20RN
Photoelectric Sensor, Diffuse Reflective, NPN, Infrared LED, 300mm Range, 12/24VDC, Cable
$100.67$100.67 -
$108.64$108.64 -
Carlo Gavazzi
EO1804PPAS-1
Photoelectric Diffuse Reflective Sensor, M18, 10-40VDC, 400mm Range, PNP, 4-Wire Complementary, NO/NC, M12 Plug, Modulated, Infrared Light 880nm, LED Indication, IP67
$144.85$144.85 -
Takex
GS20N
Photoelectric Sensor, Diffuse Reflective, NPN, Infrared LED, 200mm Range, 12/24VDC, Cable, IP67, Head-On
$112.20$112.20 -
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GS20SN
Photoelectric, NPN, Diffuse Reflective, 300mm Rng, 12-24VDC, Light ON/Dark ON, 2m Cable, IP67
$116.45$116.45 -
IDEC
SA1E-XP1C
Photoelectric, PNP, Light ON, Transparent, up to 2m sensing, M8 connector (Needs Cable), NCNR
$118.54$118.54 -
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295670-100005
Photoelectric Diffuse Sensor, LED, 1.4m, 10-30VDC, 4-in-1 Output, IO-Link, M12
$95.63$95.63
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