Photoelectric Sensors

Photoelectric sensors detect and measure physical objects or quantities by emitting a field or beam of electromagnetic radiation, an object is detected by measuring alterations in the return signal. There are 3 main types of photoelectric sensors which provide reliable detection, these are through-beam, retro-reflective and diffuse. The basic function of each is to detect the presence or absence of objects or measure the distance to the object.RS Components offer an extensive selection of photoelectric sensors for use various industrial applications. Our high-quality products are supplied from leading brands including Omron, Sick, Pepperl + Fuchs Telemecanique Sensors Baumer, Banner and of course RS PRO.

Through-beam Sensors

Through-beam sensors (aka thru-beam) rely on two separate housings, one for the transmitter and one for the receiver, with the transmitter providing a continuous beam of light to the receiver. Each time an object passes through the beam this interrupts the signal between the transmitter and receiver, which in turn causes the receiver to send an electrical signal to the output. Through-beam sensors are suited to long-distance sensing and can detect almost any object, irrespective of colour or angular motion.

Retro-reflective Sensors

Retro-reflective photoelectric sensors (retroreflective) have both the transmitter and receiver contained within the same housing but require a reflector opposite to the sensor. The reflector bounces the light beam back to the transmitter until an object breaks the beam. Objects which are highly reflective such as aluminium require sensors with polarising filters. The filter allows the sensor to acknowledge that the reflected light from reflecting materials is different from the reflector.

Diffuse Sensors

Diffuse sensors (proximity sensor) are easier to install as only one device must be mounted. This is because the transmitter and receiver are contained within one housing. Diffuse sensors use the reflection from the target object within a predetermined sensing range. The transmitter sends out a continuous beam of light, once this hits the target it is diffused in all directions, a part of this light is reflected and recognised by the receiver, the receiver then sends an electrical signal to the output.A special type of diffused mode is background suppression which enables the user to precisely control the sensing range.


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Description Price Sensor Style Detection Type Detection Range Output Type Electrical Connection Switching Mode Maximum AC Voltage Communication Protocol Maximum DC Voltage Optical Technology Terminal Type Light Source IP Rating Maximum Current
RS Stock No. 134-8365
Mfr. Part No.42EF-D2MPAK-F4
kr 449,61
Each
Units
Block Diffuse 500 mm PNP 4-Pin Connector - - IO-LINK 30V - 4-Pin Micro Quick Disconnect LED IP67 100 mA
RS Stock No. 714-1616
Mfr. Part No.42JS-E1EZB1-F4
kr 263,18
Each
Units
Block Through Beam (Emitter) 10 m - 4-Pin Connector - - - 30V - - Infrared IP67 -
RS Stock No. 134-8361
Mfr. Part No.42JT-R8LAT1-P4
kr 581,20
Each
Units
Block Through Beam (Receiver) 0 → 18 m NPN/PNP 4-Pin M8 Connector - - IO-LINK 30V - 4-Pin Pico Quick Disconnect Laser Light IP67, IP69K 30 mA
RS Stock No. 134-8366
Mfr. Part No.42EF-D2MPAK-Y4
kr 449,61
Each
Units
Block Diffuse 500 mm PNP 4-Pin Connector - - IO-LINK 30V - 4-Pin Pico Quick Disconnect LED IP67 100 mA
RS Stock No. 714-1583
Mfr. Part No.42JS-D2MPA1-F4
kr 438,64
Each
Units
Block Diffuse 3 → 800 mm PNP 4-Pin Connector - - - 30V - - - IP67 -
RS Stock No. 134-8352
Mfr. Part No.42JT-D2LAT1-P4
kr 669,93
Each
Units
Block Diffuse 3 → 800 mm NPN/PNP 4-Pin M8 Connector - - IO-LINK 30V - 4-Pin Pico Quick Disconnect LED IP67, IP69K 30 mA
RS Stock No. 714-1577
Mfr. Part No.42CSS-C2MPA1-D4
kr 736,72
Each
Units
Barrel Clear Object Detection 1 m PNP - - - - 30V - - LED IP69K 100 mA
RS Stock No. 134-8368
Mfr. Part No.42EF-P2MPB-F4
kr 491,48
Each
Units
Block Retroreflective 3 m PNP 4-Pin Connector - - IO-LINK 30V - 4-Pin Micro Quick Disconnect LED IP67 100 mA
RS Stock No. 134-8358
Mfr. Part No.42JT-B8LAT1-P4
kr 1 415,63
Each
Units
Block Background Suppression 4 → 120 mm NPN/PNP 4-Pin M8 Connector - - IO-LINK 30V - 4-Pin Pico Quick Disconnect Laser Light IP67, IP69K 30 mA
RS Stock No. 714-1599
Mfr. Part No.42JS-R9MPA2-F4
kr 356,89
Each
Units
Block Through Beam (Receiver) 10 m PNP 4-Pin Connector - - - 30V - - Infrared IP67 -
RS Stock No. 134-8369
Mfr. Part No.42EF-P2MPB-Y4
kr 497,46
Each
Units
Block Retroreflective 3 m PNP 4-Pin Connector - - IO-LINK 30V - 4-Pin Pico Quick Disconnect LED IP67 100 mA
RS Stock No. 134-8353
Mfr. Part No.42JT-B2LAT2-P4
kr 1 056,73
Each
Units
Block Background Suppression 3 → 400 mm NPN/PNP 4-Pin M8 Connector - - IO-LINK 30V - 4-Pin Pico Quick Disconnect LED IP67, IP69K 30 mA
RS Stock No. 134-8364
Mfr. Part No.42EF-D2MPAK-A2
kr 449,61
Each
Units
Block Diffuse 500 mm PNP Pre-Wired - - IO-LINK 30V - Cable LED IP67 100 mA
RS Stock No. 134-8360
Mfr. Part No.42JT-E8EZB1-P4
kr 686,88
Each
Units
Block Through Beam (Emitter) 0 → 18 m NPN/PNP 4-Pin M8 Connector - - IO-LINK 30V - 4-Pin Pico Quick Disconnect Laser Light IP67, IP69K 30 mA
RS Stock No. 714-1612
Mfr. Part No.42JS-E2EZB1-F4
kr 263,18
Each
Units
Block Through Beam (Emitter) 10 m - 4-Pin Connector - - - 30V - - LED IP67 -
RS Stock No. 134-8355
Mfr. Part No.42JT-E2EZB1-P4
kr 395,77
Each
Units
Block Through Beam (Emitter) 0 → 13 m NPN/PNP 4-Pin M8 Connector - - IO-LINK 30V - 4-Pin Pico Quick Disconnect LED IP67, IP69K 30 mA
RS Stock No. 714-1565
Mfr. Part No.42CSS-B2MPA1-D4
kr 1 016,86
Each
Units
Barrel Diffuse 100 mm PNP - - - - 30V - - LED IP69K 100 mA
RS Stock No. 134-8371
Mfr. Part No.45LMS-D8LGC2-D4
kr 4 516,06
Each
Units
Block Diffuse 0.2 → 15 m NPN/PNP 4-Pin M12 Connector - - IO-LINK 30V - 4-Pin Micro Quick Disconnect LED IP65 70 mA
RS Stock No. 134-8356
Mfr. Part No.42JT-R9LAT1-P4
kr 516,40
Each
Units
Block Through Beam (Receiver) 0 → 18 m NPN/PNP 4-Pin M8 Connector - - IO-LINK 30V - 4-Pin Pico Quick Disconnect LED IP67, IP69K 30 mA
RS Stock No. 134-8367
Mfr. Part No.42EF-P2MPB-A2
kr 497,46
Each
Units
Block Retroreflective 3 m PNP Pre-Wired - - IO-LINK 30V - Cable LED IP67 100 mA