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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!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 -
Baumer
FHDK 10N5101
Miniature Diffuse Sensor, Background Suppression, Pulsed Red LED, 20-120mm Range Tw, Mech. 5-Turn Adj., 10-30VDC, Light/Dark Operate, NPN, <100mA, 2m 4-Pin Cable, 27 x 10.4 x 14mm (HWD), Plastic ASA Housing, PMMA Optics, -25 to +65°C, IP65
$470.29$470.29 -
$95.20$95.20 -
Baumer
FPDK 10P5130
Retroreflective Sensor, Miniature, Pulsed Red LED, 10-30VDC, 3.5m Actual Range Sb, 4m Nominal Range Sn, PNP, Light/Dark Operate, 2m 4-Pin Cable, 27 x 10.4 x 16.3mm (HWD), Plastic (ASA) Housing, PMMA Optics, -20° to +65°C, IP65
$257.20$257.20 -
$134.73$134.73 -
Available Now! 
Available Now!Takex
DL-S200P
Photo Sensor, Fixed Field Reflective, Relay, 200/1000mm, Infrared LED, Terminal Block
$112.79$112.79 -
Baumer
FHDK 10P1101/KS35
Miniature Diffuse Sensor, Background Suppression, Pulsed Red LED, 20-120mm Range Tw, Mech. 5-Turn Adj., 10-30VDC, Light Operate, PNP, <100mA, Flylead Connector M8 3-Pin, 27 x 10.4 x 14mm (HWD), Plastic ASA Housing, PMMA Optics, -25 to +65°C
$484.29$484.29 -
Baumer
OZDK 14P1901/S35A
Diffuse Contrast Sensor-Standard, 20...300 mm Sensing Distance, Pulsed Red Laser Diode, PNP, Teach-in Adjustment, M8 Connector (4 Pin) IP 67
$868.20$868.20 -
Leuze
50128011
Forked Photoelectric Sensor, 2mm Width/Gap, LED, 10-30VDC, M8, 4-Pin, Non-Transparent Detect, NCNR
$348.00$348.00 -
Baumer
FHDK 04G6102/KS35A
Subminiature Diffuse Sensor with Background Suppression (BGS), Pulsed Point Source LED, 50mm Tw Range, 11-30VDC, Light Operate, Push-Pull, 50mA, 200mm Flylead Connector M8 4-Pin, 44.8 x 4 x 6.2mm (HWD), ASA Housing, PMMA Optics, -10 to +50°C, IP65
$410.80$410.80 -
Baumer
FPDK 07P6901/KS35A
Retroreflective Sensor, Subminiature, Pulsed Red LED, 10-30VDC, 0.6m Actual Range Sb, 0.8m Nominal Range Sn, Teach-in, PNP, Light/Dark Operate, M8 4-Pin Flylead Connector (200mm Length), 17.8 x 8 x 12.6mm HWD, Plastic Housing, PMMA Optics,
$317.40$317.40
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