-
Available Now! 
Available Now!Pepperl+Fuchs
909112
Photoelectric, Light On/Dark On, Diffuse Mode, IP67, 150mm Cable, 10-450mm
$132.16$132.16 -
Available Now! 
Available Now!Baumer
FHDK 14P5104/S35A
Diffuse Sensor, Background Suppression (BGS), Pulsed Red LED, 30-500mm Range Tw, Mechanical 10-Turn Adj., 10-30VDC, Light/Dark Operate, PNP, <100mA, M8 4 Pin Connector, 43 x 14.8 x 31mm(HWD), Plastic Housing, PMMA Optics, -25 to +65°C, IP67
$377.50$377.50 -
Baumer
FHDK 14P6901/S35A
Diffuse Sensor, Background Suppression (BGS), Pulsed Red LED, 40-200mm Range Tw, Teach-In Sensing Adj., 10-30VDC, Light/Dark Operate, PNP, <100mA, M8 4-Pin Connector, 43 x 14.8 x 31mm (HWD), Plastic Housing, PMMA Optics, -25 to +65°C, IP67
$559.00$559.00 -
Available Now! 
Available Now!Baumer
FPDK 14P5101/S35A
Retroreflective Sensor, Standard, Pulsed Red LED, 10-30VDC, 7m Actual Range Sb, 7.2m Nominal Range Sn, PNP, Light/Dark Operate, M8 4-Pin Connector, 43 x 14.8 x 31mm (HWD), Plastic (ASA, MABS) Housing, PMMA Optics, -25° to +65°C, IP67
$258.70$258.70 -
Available Now! 
Available Now!Takex
NA-T20RF
Photoelectric Sensor, Power Supply, Thru-Beam, Relay, Red LED, 20000mm Range, Terminal Block
$183.18$183.18 -
$142.63$142.63 -
IDEC
SA2E-TN3-2M
Miniature Photoelectric Thru-Beam Sensor, 20m Sensing Range, NPN, Light On/Dark On (Selectable), 2m Cable, IP67, 10.8 x 19.5 x 31.5mm (WDH) Excluding LEDs and Controls
$44.92$44.92 -
Available Now! 
$164.64$164.64 -
Pepperl+Fuchs
905778
Photoelectric Retroreflective Sensor with Polarization Filter, 10-30VDC, 3.5m Range, Light/Dark On, 2m Fixed Cable, 34.5 x 15mm, IP67
$115.36$115.36 -
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Available Now!Baumer
FHDK 10P3101/KS35
Photoelectric Thru-Beam Sensor, Receiver, 5m Sb/6m Sn Range, 270° Potentiometer, 10-30VDC, Dark Operate, PNP, <100mA, Rectangular 27 x 10.4 x 14mm (HWD), Plastic (ASA) Housing, PMMA Optics, Flylead Connector M8 3-Pin, -25 to +65°C, IP65
$790.00$790.00 -
Pepperl+Fuchs
188559
Photoelectric Retroreflective Sensor, DC, Front Optical Face, Light ON/Dark ON, Polar Filter
$106.40$106.40 -
Available Now! 
Available Now!Takex
AS-U25D
Photoelectric Sensor, Thru-Beam, U Shape, NPN, Infrared LED, 25mm Gap Detect, 2mm Dia, Cable
$112.20$112.20
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