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Carlo Gavazzi
PC50CNT20R
Photoelectric Thru-Beam Sensor, Emitter, Square, 12-240VDC and 24-240VAC, 50-60Hz, 20m Range, SPDT NO/NC, 2m Grey PVC Cable, Adjustable Sensitivity, Modulated, Infrared Light 880nm, IP67, 17W x 50H x 50Dmm
$141.51$141.51 -
Carlo Gavazzi
PC50CNT20RP
Photoelectric Thru-Beam Sensor, Receiver, Square, 12-240VDC and 24-240VAC, 50-60Hz, 20m Range, SPDT NO/NC, 2m Grey PVC Cable, Adjustable Sensitivity, Modulated, Infrared Light 880nm, IP67, 17W x 50H x 50Dmm
$206.66$206.66 -
Carlo Gavazzi
PE12CNT15
Photoelectric Throughbeam Emitter, 15m Range, Infrared Modulated Light 880nm, 10-30VDC Power Supply, 5m Cable, ESPE Type 2, EN12445, EN12453, EN12978, UL325, UL508
$67.11$67.11 -
Carlo Gavazzi
PE12CNT15PO
Photoelectric Throughbeam Receiver, 15m Range, Infrared Modulated Light 880nm, 10-30VDC Power Supply, PNP Output, NO, Light Switching, 5m Cable, ESPE Type 2, EN12445, EN12453, EN12978, UL325, UL508
$89.73$89.73 -
Carlo Gavazzi
PH18CNB20PAM1SA
Photoelectric Diffuse Reflective Sensor with Background Suppression, M18 Square Housing, 0-200mm (0.2m) Range, Polarity Free Red Light 625nm, 10-30VDC Power Supply, PNP Output, NO/NC, Light and Dark Switching, M12 4-pin Plug, Adjustable Sen
$104.40$104.40 -
Carlo Gavazzi
PH18CND10PAM1SA
Photoelectric Diffuse Reflective Sensor, M18 Square Housing, 1000mm (1m) Range, Red Modulated Light 625nm, 10-30VDC Power Supply, PNP, NO/NC, M12 4-pin Plug, IP67/IP69K
$75.25$75.25 -
Carlo Gavazzi
PH18CND10PASA
Photoelectric Diffuse Reflective Sensor, M18 Square Housing, 1000mm (1m) Range, Red Modulated Light 625nm, 10-30VDC Power Supply, PNP, NO/NC, 2m Grey PVC Cable, IP67/IP69K
$78.58$78.58 -
Carlo Gavazzi
PH18CNP50NASA
Photoelectric Polarized Retroreflective Sensor, M18 Square Housing, 5000mm (5m) Range, Red Polarized Modulated Light 625nm, 10-30VDC Power Supply, NPN Output, NO/NC, Light and Dark Switching, 2m Grey PVC Cable, IP67/IP69K
$80.98$80.98 -
Carlo Gavazzi
PH18CNP50PAM1SA
Photoelectric Polarized Retroreflective Sensor, M18 Square Housing, 5000mm (5m) Range, Red Polarized Modulated Light 625nm, 10-30VDC Power Supply, PNP Output, NO/NC, Light and Dark Switching, M12 Plug, IP67/IP69K
$77.73$77.73 -
Carlo Gavazzi
PH18CNP50PASA
Photoelectric Polarized Retroreflective Sensor, M18 Square Housing, 5000mm (5m) Range, Red Polarized Modulated Light 625nm, 10-30VDC Power Supply, PNP Output, NO/NC, Light and Dark Switching, 2m Grey PVC Cable, IP67/IP69K, Manufacturer Mini
$81.05$81.05 -
Carlo Gavazzi
PH18CNR65PAM1SA
Photoelectric Retroreflective Sensor, M18 Square Housing, 6500mm (6.5m) Range, Infrared Modulated Light 850nm, 10-30VDC Power Supply, PNP Output, NO/NC, Light and Dark Switching, M12 4-pin Plug, IP69K
$75.25$75.25 -
Carlo Gavazzi
PH18CNR65PASA
Photoelectric Retroreflective Sensor, M18 Square Housing, 6500mm (6.5m) Range, Infrared Modulated Light 850nm, 10-30VDC Power Supply, PNP Output, NO/NC, Light and Dark Switching, 2m Grey PVC Cable, IP69K
$78.58$78.58
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