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Through-beam photoelectric sensors consist of an emitter and a receiver in separate housings. The emitter sends a beam of light to the receiver, which determines a target is present when the beam is interrupted. These sensors offer the longest sensing distances but require precise alignment.
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Through-Beam Sensors
Category Selection
Through-beam photoelectric sensors have an emitter and a receiver housed separately. The emitter sends a beam of light to the receiver, which detects a target when the beam is blocked. These sensors provide the longest sensing distances and high reliability but require precise alignment for proper operation.
For part listings and specifications, go to Shop Now
4mm and 5mm Tubular
Contrinex 4mm smooth barrel and 5mm threaded barrel sensors feature rugged stainless steel housings and are perfect for applications requiring a small footprint.
- Sensing distances up to 600mm
- Dark-on operating mode
- Visible red light emission
- 1 kHz switching frequency
- 10 to 30 VDC operating voltage
- 2m axial cable and M8 quick-disconnect styles
- IP67 protection rating
Components starting at
$53.00
(LLR-D04MA-NMK-400)
8mm Tubular
AutomationDirect and ProSense 8mm tubular sensors feature compact stainless steel housings suitable for small space applications.
- Sensing distances up to 2.2m
- Light-on or dark-on operating modes
- Infrared or visible red light emission
- Up to 10 kHz switching frequency
- 10 to 30 VDC operating voltage
- 2m axial cable and M8 quick-disconnect styles
- IP67 protection rating
Components starting at
$42.50
(HEE-00-3A)
12mm Tubular
AchieVe and Contrinex 12mm tubular sensors offer rugged metal housings ideal for demanding industrial environments.
- Sensing distances up to 10m
- Complementary light-on/dark-on and selectable light-on/dark-on operating modes
- Infrared or visible red light emission
- Contrinex sensors are made in the USA ; their PNP models offer IO-Link v1.0 compatibility
- 10 to 30 VDC operating voltage
- 2m axial cable and M12 quick-disconnect styles
- IP67 protection rating
Components starting at
$26.50
(FDME-00-1H
18mm Tubular
Newest Additions!
- AchieVe FKL series 18mm tubular metal photoelectric sensors
18mm tubular photoelectric sensors offer performance and value for a wide range of applications and include models featuring 316L stainless steel housings and IP69K protection ratings for Food and Beverage applications.
- AchieVe, AutomationDirect, Contrinex, and ProSense brands
- Sensing distances up to 50m
- Complementary light-on/dark-on, light-on, dark-on, and selectable light-on/dark-on operating modes
- Axial or right-angle optical head options
- Class 1 laser, infrared, or visible red light emission
- Plastic, metal, or stainless steel housing options
- Contrinex sensors are made in the USA ; their PNP models offer IO-Link v1.0 compatibility
- AC or DC operating voltage options
- IP67 or IP68/69K protection rating
Components starting at
$23.50
(LLR-M18PA-NMS-400)
30mm Tubular
Eaton E58 series harsh duty photoelectric sensors are built with stainless steel, PVDF, and tempered glass components that are mechanically assembled using Vitron seals to ensure resistance to chemicals and moisture intrusion. From harsh industrial solvents and high-pressure washdowns to heavy vibration and shock, these sensors are designed to withstand the toughest environments.
- Sensing distances up to 250m
- Light-on and dark-on operating modes
- High excess gain allows accuracy despite contamination in the environment
- Visible red light emission
- AC or DC operating voltage options
- Suitable for harsh duty and Food and Beverage applications
- AC micro ½"-20 UNF thread or M12 quick-disconnect
- IP69 protection rating
Components starting at
$286.00
(E58-30TS250-GAP)
Rectangular
Rectangular photoelectric sensors offer accurate and reliable object detection for a wide range of applications. Their flat surfaces allow for precise alignment and stable mounting, while built-in mounting holes simplify installation. Select models offer IO-Link compatibility.
- AutomationDirect, Contrinex, Eaton, Leuze, and Prosense brands
- Sensing distances up to 500ft (152m)
- Complementary light-on/dark-on, light-on, dark-on, and selectable light-on/dark-on operating modes
- Infrared or visible red light emission
- Contrinex sensors are made in the USA and ECOLAB-approved for use in hygienic areas
- Stainless steel models are suitable for harsh duty and Food and Beverage applications
- AC or DC operating voltage
- Plastic or stainless steel housing options
- Up to IP69K protection ratings
Components starting at
$24.50
(LLR-C23PA-NMS-400)
Small Space Rectangular
Newest Additions!
- Autonics miniature photoelectric sensors
Autonics and ProSense small space rectangular photoelectric sensors feature compact housings that are easy to install in tight spaces. These robust sensors offer accurate sensing, fast response times, and high performance for challenging industrial applications.
- Sensing distances up to 3m
- Offering ultra-thin sizes down to a 3.7mm thickness (4.6mm including lens)
- Ultra-slim models feature widths as narrow as 7.2mm
- Light-on or dark-on operating modes
- Infrared or visible red light emission
- 10 to 30 VDC or 10.6 to 26.4 VDC operating voltages
- 2m axial cable and M8 quick-disconnect styles
- Plastic or metal housings
- IP67 protection rating
Components starting at
$97.00
(F16RR-DN-1F)
Square
Wenglor OPT series standard duty square photoelectric sensors provide small spot diameters, simple potentiometer adjustment, and IO-Link compatibility. They feature sturdy plastic housings with flexible mounting options.
- Sensing distances up to 20m
- Complementary light-on/dark-on operating mode
- Visible red light emission
- 10 to 30 VDC operating voltage
- M12 quick-disconnect
- IP67/68 protection rating
Components starting at
$71.00
(OPT2130)
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