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庫存編號 818-1611
製造零件編號EE-SX674
BrandOmron
TWD1,064.00
單位
Fork Through Beam (Fork) 5 mm NPN 4-Pin Connector - - - 24V Connector Infrared IP50 12 mA -
RS庫存編號 808-9171
製造零件編號CX-422
BrandPanasonic
TWD3,625.00
單位
Block Diffuse 800 mm NPN 2m Cable - - - 24V - Infrared IP67 100 mA -
RS庫存編號 812-8153
製造零件編號CX-441
BrandPanasonic
TWD4,153.00
單位
Block Retroreflective 2 → 50 mm NPN 2m Cable - - - 24V - LED IP67 20 mA -
RS庫存編號 808-9199
製造零件編號CX-442
BrandPanasonic
TWD4,587.00
單位
Block Diffuse 20 → 300 mm NPN 2m Cable - - - 24V - LED IP67 100 mA -
RS庫存編號 194-4018
製造零件編號OPB608A
BrandOptek
TWD56.00
單位
Block Retroreflective 1.27 → 9.525 mm NPN - - - - - Wire Lead Infrared - - -
RS庫存編號 807-4557
製造零件編號EE-SV3
BrandOmron
TWD212.00
單位
Block Through Beam (Fork) - Phototransistor - - 1.5V - - PCB Pin - - 50 mA -
RS庫存編號 512-4656
製造零件編號XUK9ARCNL2
TWD3,046.00
單位
Compact Retroreflective 5 m Relay 5-Wire Cable 2m - 240V - 240V - LED IP65 3 A -
RS庫存編號 361-5510
製造零件編號EX-13A-PN
BrandPanasonic
TWD4,233.00
單位
Block Through Beam (Emitter and Receiver) 500 mm PNP 3-Wire Cable 2m - - - 24V - LED IP67 50 mA -
RS庫存編號 219-2331
製造零件編號EE-SPX403N
BrandOmron
TWD1,624.00
單位
Fork Through Beam (Fork) 13 mm NPN Non-Solder Connector - - - 24V - Infrared IP50 80 mA -
RS庫存編號 821-0157
製造零件編號EE-SX771
BrandOmron
TWD1,474.00
單位
- - - NPN - - - - - - GaAs Infrared LED IP60 - -
RS庫存編號 902-7177
製造零件編號BOS 21M-PA-RD10-S4
BrandBALLUFF
TWD6,193.00
單位
Block Diffuse 10 mm → 1 m PNP M12 Connector - - - 30V Connector LED IP67 100 mA -
RS庫存編號 808-9121
製造零件編號CX-411
BrandPanasonic
TWD3,807.00
單位
Block Through Beam (Emitter and Receiver) 10 m NPN 3-Wire Cable 2m - - - 24V - LED IP67 100 mA -
RS庫存編號 198-0553
製造零件編號E3SGS3E4
BrandOmron
TWD8,982.00
單位
Fork Through Beam (Fork) 30 mm NPN Pre-Wired Cable - - - 24V - Infrared IP67 80 mA -
RS庫存編號 125-4567
製造零件編號PM-Y65
BrandPanasonic
TWD646.00
單位
Fork Through Beam (Fork) 6 mm NPN 4-Pin Connector - - - 24V 4-Pin Connector Infrared IP40 50 mA -
RS庫存編號 778-8707
製造零件編號E3JK-DR11 2M
BrandOmron
TWD3,506.00
單位
Block Diffuse 2.5 m Relay 5-Wire Cable 2m - 240V - 240V Wire Lead LED IP64 - -
RS庫存編號 307-913
製造零件編號OPB704
BrandOptek
TWD90.00
單位
Block Retroreflective 3.8 mm NPN - - - - - Wire Lead Infrared - - -
RS庫存編號 361-5554
製造零件編號EX-14A-PN
BrandPanasonic
TWD3,582.00
單位
Block Retroreflective 2 → 25 mm PNP 3-Wire Cable 2m - - - 24V - LED IP67 50 mA -
RS庫存編號 908-7087
製造零件編號OPB700ALZ
BrandOptek
TWD311.00
單位
- - - - - - - - - - - - - -
RS庫存編號 425-8146
製造零件編號OJ5026
TWD5,136.00
單位
Block Retroreflective 2 m PNP M8 Connector - - - 30V - LED IP67 200 mA -
RS庫存編號 530-0888
製造零件編號WTB27-3P2441
BrandSick
TWD12,000.00
單位
Block Diffuse 30 → 1100 mm PNP 4-Pin M12 Connector - - - 30V - LED IP69K 100 mA -