-
Available Now! 
Available Now!Baumer
FHDK 07P6901/KS35A
Subminiature Diffuse Sensor, Background Suppression, Pulsed Red LED, 10-60mm Range Tw, 10-30VDC, Light/Dark Operate, PNP, <100mA, Flylead Connector M8 4-Pin 200mm Length, 16.2 x 8 x 10.8mm (HWD), Plastic Housing, PMMA Optics, -20 to +50°C,
$416.40$416.40 -
Available Now! 
Available Now!Carlo Gavazzi
VP01EP
Photoelectric Optical Level Sensor, PNP NC, DC Output, Polysulphone Housing
$154.51$154.51 -
Available Now! 
Available Now!Baumer
FHDK 10P5101/S35A
Miniature Diffuse Sensor, Background Suppression, Pulsed Red LED, 20-120mm Range Tw, Mech. 5-Turn Adj., 10-30VDC, Light/Dark Operate, PNP, <100mA, M8 4-Pin Connector, 27 x 10.4 x 14mm (HWD), Plastic ASA Housing, PMMA Optics, -25 to +65°C, I
$446.09$446.09 -
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
$343.60$343.60 -
Pepperl+Fuchs
216895
Photoelectric Sensor, Background Suppression, 10-30VDC, 4 Pin M8 Connector, Light On, PNP, Non-Metallic, IP57, Visible Red Beam, ML100 Series
$182.56$182.56 -
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
$235.09$235.09 -
Available Now! 
Available Now!Takex
GS20SPN
Photoelectric Sensor, Diffuse Reflective, PNP, Infrared LED, 300mm Range, 12/24VDC, Cable
$119.43$119.43 -
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
$508.40$508.40 -
Available Now! 
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
$483.14$483.14 -
Available Now! 
Available Now!Baumer
FHDK 14P5101/S14
Diffuse Sensor, Background Suppression (BGS), Pulsed Red LED, 20-350mm Range Tw, Mech. 10-Turn Adj., 10-30VDC, Light/Dark Operate, PNP, <100mA, M12 4-Pin Connector, 43 x 14.8 x 31mm HWD, Plastic Housing, PMMA Optics, -25 to +65°C, IP67
$337.05$337.05 -
Pepperl+Fuchs
267075-100485
Photoelectric Retroreflective Sensor with Polarization Filter for Clear Object Detection, Returns of This Item Must Be Approved by Manufacturer
$183.68$183.68 -
Leuze
50129377
Diffuse Sensor with Background Suppression, 10-30VDC, 0.005-0.45m Range, Red LED, PNP, Light/Dark Switching, 0.2m Black PUR Metal Male 4-Pin Cable, M12, 11.4 x 34.2 x 18.3mm WHL, IP67/IP69K
$207.49$207.49
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