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Carlo Gavazzi
PA18CRT16M1
Minimum Order 5 Pieces, Price per Piece, PA 18 CRT 16M1
Photoelectric, Thru-Beam, M18 Radial, 10-30VDC, 16m Range, Emitter, M12 Plug, IP67, 69K
$52.51$52.51 -
Carlo Gavazzi
PA18CRP40NASA
Minimum Order 5 Pieces, Price per Piece, PA 18 CRP 40 NASA
Photoelectric Polarized Retroreflective Sensor, M18 Radial, 10-30VDC, 4m Range, NPN NO/NC, 2m Cable
$73.87$73.87 -
Carlo Gavazzi
PA18CAT20NAM1SA
Minimum Order 5 Pieces, Price per Piece
Photoelectric, Thru-Beam, M18 Axial, 10-30VDC, 20m Range, NPN NO/NC, M12 Plug, IP67
$79.29$79.29 -
Leuze
50117930
LE28/4P-M12, Non-Cancellable / No Returns
Photoelectric Sensor Receiver, Throughbeam, PNP Transistor, Dark Switching, M 12 4-pin Conn., NCNR
$94.00$94.00 -
Pepperl+Fuchs
418075
DK20-25/110/124, Non-Cancellable, No Returns per Manufacturer
Photoelectric Sensor, Color Mark, Static Mode, 25 mm ± 6 mm Range, Returns of This Item Must Be Approved by Manufacturer
$608.16$608.16 -
Pepperl+Fuchs
419616
RL28-8-H-700-IR/49/105, Non-Cancellable, No Returns per Manufacturer
Photoelectric, NPN/PNP, DC, Background, IP67, M12 Connector
$404.46$404.46 -
Baumer
FHDM 16P5001/S14
10231715
Photoelectric Sensor, PNP, Diffuse with BackgroundSuppression, 10-30VDC, IP67, 50x50mm, M12 4-Pin
$547.69$547.69
Photoelectric sensors detect the distance, absence or presence of an object. These sensors are great for sensing long distances and detecting most materials.
Additional Sensor Categories:
Proximity | Ultrasonic | Pressure | Temperature | Level | Tilt
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