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 Terminal Type Light Source IP Rating Maximum Current Interface
RS Stock No. 293-8547
Mfr. Part No.FHDM12P5001/S35A
BrandBaumer
MYR998.67
Each
units
Block Diffuse 15 → 300 mm PNP 4-Pin M8 Connector - - - 30V - LED IP67 100 mA -
RS Stock No. 542-5094
Mfr. Part No.FHDK 07P 6901 KS35A
BrandBaumer
MYR896.28
Each
units
Block Diffuse 10 → 60 mm PNP 4-Pin M8 Connector - - - 30V - LED IP65 100 mA -
RS Stock No. 815-4174
Mfr. Part No.O300.GP-11110415
BrandBaumer
MYR1,074.47
Each
units
Block Diffuse 30 → 200 mm Push Pull 4-Pin M8 Connector - - - 30V Cable LED IP67 45 mA -
RS Stock No. 542-5145
Mfr. Part No.FPDK 20P 5101 S35A
BrandBaumer
MYR626.27
Each
units
Block Retroreflective 4.5 m PNP 4-Pin M8 Connector - - - 30V - LED IP67 100 mA -
RS Stock No. 815-4170
Mfr. Part No.O300.GR-11110414
BrandBaumer
MYR694.30
Each
units
Block Diffuse 30 → 300 mm Push Pull 4-Pin M8 Connector - - - 30V Cable LED IP67 45 mA -
RS Stock No. 446-0282
Mfr. Part No.OHDK 14P5101/S35A
BrandBaumer
MYR2,328.37
Each
units
Block Diffuse 20 → 350 mm PNP 4-Pin M8 Connector - - - 30V - Laser Light IP67 100 mA -
RS Stock No. 339-0003
Mfr. Part No.FPAM 18P3151/S14
BrandBaumer
MYR911.71
Each
units
Barrel Retroreflective 3.2 m PNP 4-Pin M12 Connector - - - 30V - LED IP67 200 mA -
RS Stock No. 185-2212
Mfr. Part No.FHDM 16P5001/S14
BrandBaumer
MYR1,676.14
Each
units
Block Diffuse 20 → 450 mm PNP 4-Pin M12 Connector - - - 30V - LED IP67 200 mA -
RS Stock No. 418-5672
Mfr. Part No.OZDK 10P5101/S35A
BrandBaumer
MYR2,426.55
Each
units
Block Diffuse 3 → 150 mm PNP 4-Pin M8 Connector - - - 30V - Laser Light IP67 100 mA -
RS Stock No. 338-9980
Mfr. Part No.FZAM 18P6460/S14
BrandBaumer
MYR967.82
Each
units
Barrel Diffuse 60 → 430 mm PNP 4-Pin M12 Connector - - - 30V - Infrared IP67 200 mA -
RS Stock No. 204-7582
Mfr. Part No.OHDM 12P6901/S35A
BrandBaumer
MYR3,545.70
Each
units
Block Background Suppression 120 mm PNP 4-Pin M8 Connector - - - - - - - - -
RS Stock No. 542-5139
Mfr. Part No.FHDK 20P 6901 S35A
BrandBaumer
MYR735.68
Each
units
Block Diffuse 30 → 200 mm PNP 4-Pin M8 Connector - - - 30V - LED IP67 100 mA -
RS Stock No. 187-1816
Mfr. Part No.OM70-L0070.HH0065.VI
BrandBaumer
MYR9,775.73
Each
units
Rectangular Distance 30 → 70 mm Analogue 8 Pin M12 Connector - - - 28V M12 Connector - IP67 100 mA -
RS Stock No. 418-5638
Mfr. Part No.FZDK 14P 5101 S35A
BrandBaumer
MYR579.99
Each
units
Block Diffuse 5 → 600 mm PNP 4-Pin M8 Connector - - - 30V - LED IP67 100 mA -
RS Stock No. 410-8029
Mfr. Part No.FHDK 10P 5101S35A
BrandBaumer
MYR803.71
Each
units
Block Diffuse 20 → 120 mm PNP 4-Pin M8 Connector - - - 30V - LED IP67 100 mA -
RS Stock No. 530-801
Mfr. Part No.FHDK 04G 6102 KS35A
BrandBaumer
MYR842.98
Each
units
Block Diffuse 50 mm Push Pull 4-Pin M8 Connector - - - 30V - LED IP65 50 mA -
RS Stock No. 512-5508
Mfr. Part No.FHDK 10N5101
BrandBaumer
MYR1,192.24
Each
units
Block Diffuse 20 → 120 mm NPN Cable - - - 30V - LED IP65 100 mA -
RS Stock No. 667-0560
Mfr. Part No.FHDK 14P5104/S14
BrandBaumer
MYR876.64
Each
units
Block Diffuse 30 → 500 mm PNP 4-Pin M12 Connector - - - 30V - LED IP67 100 mA -
RS Stock No. 667-0585
Mfr. Part No.OPDK 14P5901/S14
BrandBaumer
MYR2,468.63
Each
units
Block Retroreflective 10 m PNP 4-Pin M12 Connector - - - 30V - Laser Light IP67 100 mA -
RS Stock No. 136-5798
Mfr. Part No.OR18W.RR-PW1P.9VO
BrandBaumer
MYR511.96
Each
units
Barrel Retroreflective 4.5 m PNP 4-Pin M12 Connector - - - 30V Threaded LED IP67, IP69K 40 mA -