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Baumer
FHDK 14P5101/S35A
Diffuse Sensor, Background Suppression (BGS), Pulsed Red LED, 20-350mm 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
$355.69$355.69 -
$78.00$78.00 -
Carlo Gavazzi
EO1804PPAS-1
Photoelectric Diffuse Reflective Sensor, M18, 10-40VDC, 400mm Range, PNP, 4-Wire Complementary, NO/NC, M12 Plug, Modulated, Infrared Light 880nm, LED Indication, IP67
$144.85$144.85 -
IDEC
SA2E-BP3C
Miniature Photoelectric Sensor with Background Suppression (BGS), 10-350mm/20-350mm Adjustable Sensing Range, Red LED, PNP, Light On/Dark On (Selectable), M8 4-Pin Connector, IP67, 10.8 x 19.5 x 31.5mm (WDH) Excluding LEDs and Controls
$89.29$89.29 -
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 -
Takex
GN-M2CRPN-J
Photoelectric Sensor, Amplifier, Polarized, PNP, Red LED, IP67, Compact, M8 Connector
$96.90$96.90 -
Available Now! 
Available Now!Baumer
FHDM 12P5001/S35A
Diffuse Sensor With Background Suppression-Miniature, 15...300 mm Sensing Distance, Pulsed Red LED, PNP, Mechanical (5 Turn), M8 Connector (4 Pin), IP67
$461.40$461.40 -
Available Now! 
Available Now!Takex
GMR2RSPN-N
Photoelectric Sensor, Amplifier, Diffuse, PNP, Red LED, IP67, Compact, Cable, 1500mm Range
$92.35$92.35 -
IDEC
SA1E-XP1C
Photoelectric, PNP, Light ON, Transparent, up to 2m sensing, M8 connector (Needs Cable), NCNR
$118.54$118.54 -
$54.00$54.00 -
Pepperl+Fuchs
210545
Photoelectric Retroreflective Sensor with Polarization Filter, Miniature Design, 10-30VDC, 5m Detection Range, PNP Output, 2m Cable, PC (Polycarbonate) Housing, PMMA Optical Face, 31 x 11 x 20mm (HWD) IP67, Non-Cancellable, No Returns
$118.72$118.72 -
Leuze
50117930
Photoelectric Sensor Receiver, Throughbeam, PNP Transistor, Dark Switching, M 12 4-pin Conn., NCNR
$94.00$94.00
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