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Baumer
O300.GP-GW1B.72CU
Diffuse Sensor with Background Suppression (BGS), Pulsed PinPoint LED, 10-30VDC, 30-200mm Sensing Range, qTeach/External Sensing Adjustment, Light/Dark Operate, Push-Pull, 2m 4-pin Cable, IP67, 32.3 x 12.9 x 23mm (HWD)
$284.60$284.60 -
Pepperl+Fuchs
216896
Photoelectric Triangulation Diffuse Reflective Sensor with Background Suppression, Miniature Design, 350mm Adjustable Range, Red Light, Light/Dark On, NPN Output, M8 4-Pin Plug
$182.56$182.56 -
Baumer
FHDK 04G6101
Subminiature Diffuse Sensor, Background Suppression (BGS), Pulsed Point Source LED, 30mm ±2mm Range Tw, 11-30VDC, Light Operate, Push-Pull, <50mA, 2m 3-Pin Cable, 44.8 x 4 x 6.2mm (HWD), Plastic (ASA) Housing, PMMA Optics, -10 to 50°C, IP65
$399.49$399.49 -
Baumer
FHDM 12N5001
Diffuse Sensor With Background Suppression-Miniature, 15...300 mm Sensing Distance, Pulsed Red LED, NPN, Mechanical (5 Turn), 2 Meter Cable Length (4 Pin), 10...30VDC, IP67
$476.40$476.40 -
$265.00$265.00 -
Baumer
O300.GL-PV1T.72N
Diffuse Sensor with Background Suppression (BGS), Pulsed Red Laser Diode, 11-30VDC, 30-250mm Sensing Range, qTeach, Light/Dark Operate, M8 4-Pin Connector, IP67, 32.3 x 12.9 x 23mm (HWD)
$339.20$339.20 -
Baumer
O300W.GP-GW1J.PVN
Diffuse Sensor With Background Suppression-Washdown, 30...200 mm Sensing Distance, Pulsed PinPoint LED, Push-Pull Output Circuit, Teach-in and IO-Link, M8 Connector (4 Pin), IP 68/69K & proTect+
$363.29$363.29 -
Baumer
O500.GR-GW1T.72CU
Diffuse Sensor, Background Suppression, 10-30VDC, 60-550mm Sensing Distance Tw, 30-600mm Sensing Range Tb, Pulsed Red LED, 630 nm, Push-Pull, qTeach, Light/Dark Operate, 2m 4-Pin Cable, Plastic Housing, PMMA Optics, 45 x 18 x 32mm (HWD), -2
$231.49$231.49 -
Leuze
50127067
Diffuse Sensor with Background Suppression, 0.005-3m, LED, Infrared, M12, Plastic, 4-Pin, NCNR
$246.00$246.00 -
Available Now! 
Available Now!Baumer
FHDK 04G6101/KS35A
Subminiature Diffuse Sensor with Background Suppression (BGS), Pulsed Point Source LED, 30mm 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 +50C, IP65
$287.74$287.74 -
Baumer
FHDK 10N1101/KS35
Miniature Diffuse Sensor, Background Suppression, Pulsed Red LED, 20-120mm Range Tw, Mech. 5-Turn Adj., 10-30VDC, Light Operate, NPN, <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 -
Leuze
50127048
Diffuse Sensor with Background Suppression, 0.005-3m, LED, Red, M12, Plastic, 4-Pin, NCNR
$237.00$237.00
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