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$155.10$155.10 -
Available Now! 
Available Now!Autonics
BEN3M-PDT
Photoelectric Sensor, Polarized Retroreflective, 0.1-3m, DC Volt, Solid-State Output (Transistor)
$71.00$71.00 -
Autonics
BH4M-PDT
Photoelectric, Retroreflective, 4m Sensing, 12-24V, NPN/PNP, IP67, Front or Side Mount, Compact
$92.00$92.00 -
Autonics
BMS2M-MDT
Photoelectric Sensor, Retroreflective, 0.1-2m, Opaque Material (Min Ø60mm), 12-24VDC
$66.00$66.00 -
Takex
CS-R85
Color Sensor, 12-24VDC, ID of Color Ratios, 10ms or Less, NPN/PNP Changeable Output Mode, IP40, Detects Various Lighting Types from High-Frequency Pulse to DC LED Light Sources
$724.63$724.63 -
Baumer
FPDK 10P5130/S35A
Retroreflective Sensor, Miniature, Pulsed Red LED, 10-30VDC, 3.5m Actual Range Sb, 4m Nominal Range Sn, PNP, Light/Dark Operate, M8 4-Pin Connector, 27 x 10.4 x 16.3mm (HWD), Plastic (ASA) Housing, PMMA Optics, -25° to +65°C, IP67
$237.09$237.09 -
Baumer
FPDK 14N5101/S35A
Retroreflective Sensor, Standard, Pulsed Red LED, 10-30VDC, 7m Actual Range Sb, 7.2m Nominal Range Sn, NPN, 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 -
Baumer
FPDK 14P5111/S35A
Retroreflective Sensor, Standard, Pulsed Red LED, 10-30VDC, 3.2m Actual Range Sb, 3.8m Nominal Range Sn, PNP, Light/Dark Operate, M8 4-Pin Connector, 43 x 14.8 x 31mm (HWD), Plastic (ASA, MABS) Housing, PMMA Optics, -20° to +65°C, IP67
$466.20$466.20 -
Baumer
O200.RL.C-GW1J.72CV/FIN1
Photoelectric Retroreflective Sensor with Polarization Filter, Single Lens Optics, Pulsed Red Laser Diode, 10-30VDC, 0.8 Sb / 1.2m Sn Range
$306.60$306.60 -
Pepperl+Fuchs
134129
Photoelectric Retroreflective Sensor with Polarization Filter, 12-240VAC/DC, 0-17m Detection Range, Light On/Dark On Switchable, -40 to 60°C (-40 to 140°F) Ambient Temperature, 88 x 25.8 x 65.5mm (HWD), IP67
$343.98$343.98 -
Pepperl+Fuchs
183065
Photoelectric, Light On, Retro-Reflective, 0 to 9000mm, AC/DC, Relay Output, 2m Cable
$162.40$162.40 -
Pepperl+Fuchs
221827
Photoelectric, PNP, Retroreflective, Polarized, Cable with M12, Light ON/Dark ON, DC, IP67
$125.44$125.44
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