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Takex
DLN-S20MV
Photoelectric Sensor, BGS/FGS Selectable, Infrared LED (850nm), 12-24VDC, 10-300mm Detecting Distance, NPN/PNP, Light ON/Dark ON Selector, 2m Cable, PBT Housing, Polycarbonate Lens, IP67 (Mounting Bracket Options to Order Separately: BK-001
$172.98$172.98 -
Baumer
FHDK 10G5121/S35A
Miniature Diffuse Sensor, Background Suppression (BGS), Pulsed Red LED, 50mm ±3mm Range Tw, 10-30VDC, Light/Dark Operate, Push-Pull, <50mA, M8 4-Pin Connector, 27 x 10.4 x 14.7mm (HWD), Plastic (ASA) Housing, PMMA Optics, -25 to +65°C, IP67
$383.80$383.80 -
Baumer
FHDK 10G5121
Miniature Diffuse Sensor, Background Suppression (BGS), Pulsed Red LED, 50mm ±3mm Range Tw, 10-30VDC, Light/Dark Operate, Push-Pull, <50mA, 2m 4-Pin Cable, 27 x 10.4 x 14.7mm (HWD), Plastic (ASA) Housing, PMMA Optics, -25 to +65°C, IP65
$399.89$399.89 -
Baumer
FHDK 10G5120
Miniature Diffuse Sensor, Background Suppression (BGS), Pulsed Red LED, 30mm ±2mm Range Tw, 10-30VDC, Light/Dark Operate, Push-Pull, <50mA, 2m 4-Pin Cable, 27 x 10.4 x 14.7mm (HWD), Plastic (ASA) Housing, PMMA Optics, -25 to +65°C, IP65
$399.89$399.89 -
Carlo Gavazzi
PH18CNT20PASA
Photoelectric Thru-Beam Sensor (Receiver), M18 Square Housing, 20m Range, Infrared Modulated Light 850nm, 10-30VDC Power Supply, PNP Output, NO/NC, Light and Dark Switching, 2m Grey PVC Cable, IP67/IP69K, UL508
$76.97$76.97 -
Carlo Gavazzi
PH18CNT20NASA
Photoelectric Thru-Beam Sensor (Receiver), M18 Square Housing, 20m Range, Infrared Modulated Light 850nm, 10-30VDC Power Supply, NPN Output, NO/NC, Light and Dark Switching, 2m Grey PVC Cable, IP67/IP69K, UL508
$76.97$76.97 -
Carlo Gavazzi
PH18CNT20
Photoelectric Thru-Beam Sensor (Emitter), M18 Square Type, 20m Range, Infrared Modulated Light 850nm, 10-30VDC Power Supply, 2m Grey PVC Cable, IP67/IP69K, UL508
$52.39$52.39 -
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
$76.89$76.89 -
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
$77.72$77.72 -
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
$74.43$74.43 -
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
$103.20$103.20 -
Pepperl+Fuchs
267075-100481
Photoelectric Retroreflective Sensor with Polarization Filter for Clear Object Detection, Returns of This Item Must Be Approved by Manufacturer
$183.68$183.68
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