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Leuze
PRK318B/2N-M12
Polarized Retroreflective Sensor, 10-30VDC, 0.02-6m Range Limit with Reflector TK(S) 100x100, Red LED, 620nm, NPN, Light/Dark Switching, M12 Male 4-Pin A-Coded Connector, 18 x 46mm, ABS Housing, Plastic Face, -40 to +60C, IP67
$105.00$105.00 -
Leuze
PRK5B/2X-M8
Polarized Retroreflective Sensor, 10-30VDC, 0.02-6.5m with Reflector (TK(S) 100x100, Red LED, 645nm, NPN Light Switching (Dark Switching by Reversing Polarity), M8 Male 4-Pin Connector, 11 x 32.4 x 20mm (WHL), ECOLAB, IP67, 5B Series
$94.00$94.00 -
Leuze
PRK5B/4
Polarized Retroreflective Sensor, 10-30VDC, 0.02-6.5m with Reflector (TK(S) 100x100, Red LED, 645nm, PNP Light Switching (Dark Switching by Reversing Polarity), 2m PVC Cable/M3 Thread Sleeves, 11 x 32.4 x 20mm (WHL), ECOLAB, IP67, 5B Series
$94.00$94.00 -
Leuze
PRK5B/4X-200-M8
Polarized Retroreflective Sensor, 10-30VDC, 0.02-6.5m with Reflector (TK(S) 100x100, Red LED, 645nm, PNP Light Switching (Dark Switching by Reversing Polarity), 0.2m PVC Cable/M8 Connector, 11 x 32.4 x 20mm (WHL), ECOLAB, IP67, 5B Series
$102.00$102.00 -
$775.63$775.63 -
$209.10$209.10 -
Leuze
RK46C.DL3/4P-M12
Unpolarized Retroreflective Sensor, 10-30VDC, 0-1.5m, Red LED, 620nm, O/P 1: PNP Light Switching and O/P 2: PNP Dark Switching, M12 Male 4-Pin A-Coded Connector, ECOLAB, IP67/69K, 20.5 x 76.3 x 44mm (WHL), Polybag Detection, 46C Series
$300.00$300.00 -
$45.08$45.08 -
$49.00$49.00 -
IDEC
S5N-ML-5-B01-PP
Photoelectric Retroreflective Polarized Sensor, M18 Metal Housing, Laser, Axial Optic, 10-30VDC, 16m Range, PNP, M12 Connector, IP67, NCNR
$192.97$192.97 -
IDEC
S5N-MR-5-C01-PP
Photoelectric Long Diffuse Proximity Sensor, M18, PNP NO-NC, M12 Connector , NCNR
$90.50$90.50 -
IDEC
S5N-PA-5-B01-PK
Photoelectric Sensor Tubular PNP / NO, M18 Red LED Emission Trimmer Adjust Retro Reflex-Polarized, M12 Plastic Housing Axial Optics L/D Input -Non-Cancellable, No Returns
$56.91$56.91
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