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Available Now! 
Available Now!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 -
Takex
GMR2RPNN-J
Photoelectric Sensor, Amplifier, Thru-Beam, PNP, Red LED, IP67, Compact, M8 Connector
$130.05$130.05 -
Takex
GMR2RSN
Photoelectric Sensor, Amplifier, Diffuse, NPN, Red LED, IP67, Compact, Cable, 1500mm Range
$130.48$130.48 -
Available Now! 
Available Now!Takex
GMR2RSPNN-J
Photoelectric Sensor, Amplifier, Diffuse, PNP, Red LED, IP67, Compact, M8 Connector
$128.78$128.78 -
Takex
GR12RSN
Photoelectric Sensor, Convergent Reflective, NPN, Color Mark, Red LED, Cable, 12mm Range
$176.80$176.80 -
$183.18$183.18 -
Baumer
O500.SP-GW1J.72O
SmartReflect Light Barrier, 10-30VDC, 60-600mm Background Position Sde, Pulsed PinPoint LED, 630 nm, Push-Pull, Teach-In and IO-Link, Light/Dark Operate, M12 4-Pin Connector, Plastic Housing, PMMA Optics, 45 x 18 x 32mm (HWD), -25 to 60°C O
$302.20$302.20 -
Available Now! 
Available Now!Carlo Gavazzi
PA18CAR65PASA
Photoelectric, Retro-Reflective, M18 Axial, 10-30VDC, 6.5m Range, PNP NO/NC, 2m Cable
$51.32$51.32 -
IDEC
SA2E-BN3C
Miniature Photoelectric Sensor with Background Suppression (BGS), 10-350mm/20-350mm Adjustable Sensing Range, Red LED, NPN, Light On/Dark On (Selectable), M8 4-Pin Connector, IP67, 10.8 x 19.5 x 31.5mm (WDH) Excluding LEDs and Controls, NCNR
$89.05$89.05 -
$147.48$147.48 -
Takex
UM-T50DTP
Photoelectric Sensor, Thru-Beam, NPN, Transmitter/Receiver, 500mm, Cable, Ultra Mini
$123.25$123.25
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