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. 399-1959
Mfr. Part No.FPDK14P5101/S35A
BrandBaumer
SGD174.91
Each
units
Block Retroreflective 7.2 m PNP 4-Pin M8 Connector - - - 30V - LED IP67 100 mA -
RS Stock No. 123-4133
Mfr. Part No.OADM 20I5460/S14C
BrandBaumer
SGD2,412.19
Each
units
Block Background Suppression 30 → 130 mm Analogue 5-Pin M12 Connector - - - 28V 5-Pin Connector Laser Light IP67 120 mA -
RS Stock No. 667-0576
Mfr. Part No.OHDK 14P5101/S14
BrandBaumer
SGD675.25
Each
units
Block Diffuse 20 → 350 mm PNP 4-Pin M12 Connector - - - 30V - Laser Light IP67 100 mA -
RS Stock No. 418-5694
Mfr. Part No.OPDM 12P5101/S35A
BrandBaumer
SGD913.22
Each
units
Barrel Retroreflective 7 m PNP 4-Pin M8 Connector - - - 30V - Laser Light IP67 100 mA -
RS Stock No. 815-4170
Mfr. Part No.O300.GR-11110414
BrandBaumer
SGD207.40
Each
units
Block Diffuse 30 → 300 mm Push Pull 4-Pin M8 Connector - - - 30V Cable LED IP67 45 mA -
RS Stock No. 370-4200
Mfr. Part No.OHDM 16P5001/S14
BrandBaumer
SGD1,116.61
Each
units
Block Diffuse 25 → 300 mm PNP 4-Pin M12 Connector - - - 30V - Laser Light IP67 200 mA -
RS Stock No. 312-3897
Mfr. Part No.OHDM 16P5001
BrandBaumer
SGD1,128.81
Each
units
Block Diffuse 25 → 300 mm PNP Cable - - - 30V - Laser Light IP67 200 mA -
RS Stock No. 669-8300
Mfr. Part No.FPDK10P5130/35A
BrandBaumer
SGD122.85
Each
units
Block Retroreflective 3.5 m PNP 4-Pin M8 Connector - - - 30V - LED IP67 100 mA -
RS Stock No. 446-0282
Mfr. Part No.OHDK 14P5101/S35A
BrandBaumer
SGD695.51
Each
units
Block Diffuse 20 → 350 mm PNP 4-Pin M8 Connector - - - 30V - Laser Light IP67 100 mA -
RS Stock No. 815-4174
Mfr. Part No.O300.GP-11110415
BrandBaumer
SGD303.05
Each
units
Block Diffuse 30 → 200 mm Push Pull 4-Pin M8 Connector - - - 30V Cable LED IP67 45 mA -
RS Stock No. 667-0557
Mfr. Part No.FHDK 14P5101/S14
BrandBaumer
SGD264.41
Each
units
Block Diffuse 20 → 350 mm PNP 4-Pin M12 Connector - - - 30V - LED IP67 100 mA -
RS Stock No. 399-1943
Mfr. Part No.FHDK 14P5101/S35A
BrandBaumer
SGD264.41
Each
units
Block Diffuse 20 → 350 mm PNP 4-Pin M8 Connector - - - 30V - LED IP67 100 mA -
RS Stock No. 542-5088
Mfr. Part No.FZDK 07P 6901 KS35A
BrandBaumer
SGD284.52
Each
units
Block Diffuse 20 → 150 mm PNP 4-Pin M8 Connector - - - 30V - LED IP65 100 mA -
RS Stock No. 446-0276
Mfr. Part No.FZDK 10P 5101 S35A
BrandBaumer
SGD225.70
Each
units
Block Diffuse 5 → 200 mm PNP 4-Pin M8 Connector - - - 30V - LED IP67 100 mA -
RS Stock No. 815-4180
Mfr. Part No.O500.GP-11096064
BrandBaumer
SGD321.35
Each
units
Block Background Suppression 30 → 400 mm Push Pull 4-Pin M12 Connector - - - 30V Cable LED IP67 40 mA -
RS Stock No. 542-5094
Mfr. Part No.FHDK 07P 6901 KS35A
BrandBaumer
SGD306.32
Each
units
Block Diffuse 10 → 60 mm PNP 4-Pin M8 Connector - - - 30V - LED IP65 100 mA -
RS Stock No. 123-4134
Mfr. Part No.OADM 20U5460/S14C
BrandBaumer
SGD2,412.19
Each
units
Block Background Suppression 30 → 130 mm Analogue 5-Pin M12 Connector - - - 28V 5-Pin Connector Laser Light IP67 120 mA -
RS Stock No. 498-1795
Mfr. Part No.FHDK 10P5101
BrandBaumer
SGD367.46
Each
units
Block Diffuse 20 → 120 mm PNP 4-Wire Cable 2m - - - 30V - LED IP65 100 mA -
RS Stock No. 187-1806
Mfr. Part No.O200.GP-GW1J.72NV
BrandBaumer
SGD266.44
Each
units
Rectangular Background Suppression 20 - 120 mm Push Pull 4 Pin M8 Connector - - IO-LINK 30V M8 Connector Pin Point LED IP67 50 mA IO-Link
RS Stock No. 136-5799
Mfr. Part No.OR18W.ZI-PW1P.9VO/B005
BrandBaumer
SGD140.34
Each
units
Barrel Diffuse 0 → 800 mm PNP 4-Pin M12 Connector - - - 30V Threaded Infrared IP67, IP69K 40 mA -