Proximity Sensors

Proximity sensors detect an object in close proximity without any physical contact. The sensor device uses sound, light, infrared (IR) or electromagnetic fields to help with the detection of an object within range.

Proximity Sensors (excluding Magnetic Sensors) generally have a long life span due to its non-contact sensing abilities. Proximity sensors can be used in many diverse environments that require a detection device.

Some key features and benefits of proximity sensors include:

  • Motion detection of metallic and non-metallic objects
  • Used in a wide range of temperatures, ranging from -50°C to 100° Celsius
  • High speed motion sensor with non contact properties
  • Can be used in locations and applications with an oil or water level
  • Quicker response times than a contactor

Types of Proximity Sensor

There are multiple types of sensors available, ranging from Ultrasonic Sensors, Infrared Sensors (IR Sensors), to Inductive Proximity Sensors which all use different components, measurements and temperatures. Each have specific applications, so choosing the right one for the job is important.

Infrared Sensors (IR Sensor)

Infrared Sensors or IR sensors are very common and consist of Passive Infrared Sensors (PIR) and Active Infrared Sensors. Both types of device use infrared (IR), however, a PIR sensor has a pair of pyroelectric infrared sensors in a magnetic lens which engage when the signal between them changes.

An active IR sensor uses an IR LED that emits an infrared beam towards an infrared receiver. The receiver will detect obstacles that block the infrared radiation.

Inductive Proximity Sensors

An inductive proximity sensor uses an oscillating circuit which generates an electromagnetic field. A change in oscillation occurs when the device detects any type of ferrous metal within the inductive proximity. This includes aluminium, copper, brass, and iron.

Capacitive Proximity Sensors

Capacitive Sensors are similar to Inductive Sensors but they can detect nearly all other shapes and materials, even through non-metallic walls. They are designed for use with non-ferrous materials and are ideal for close-range applications such as level detection and monitoring

Ultrasonic Proximity Sensors

Ultrasonic Sensors emit and receive a high frequency sound wave which can be reflected or absorbed by anything within its sensing range. Ultrasonic sensors are generally high speed and can be used over long distances for the measurement of wind speed, fluid level, and speed through air or water.

Magnetic Proximity Sensors

Magnetic proximity sensors are designed to measure the presence or absence of an object by using an external magnetic field.

You can learn more in our complete guide to proximity sensors.


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Description Price Body Style Sensor Technology Thread Size Output Type Detection Range Terminal Type Series Supply Voltage Communication Protocol Length Maximum AC Voltage Switching Frequency Width Depth
RS Stock No. 701-8266
BrandRS PRO
kr 408,44
Each
Units
Barrel Inductive M18 x 1 PNP 8 mm Cable - 10 → 30 V dc - 48mm - - - -
RS Stock No. 896-7282
BrandRS PRO
kr 410,07
Each
Units
Block Capacitive - PNP 8 mm Cable - 10 → 30 V dc - 50mm - 30 Hz 30mm 7mm
RS Stock No. 166-9497
BrandRS PRO
kr 105,089
Each (In a Box of 540)
Units
Barrel Ultrasonic - - 0 → 300 mm PCB - 20 V - 7.1mm - - - -
RS Stock No. 237-0799
BrandRS PRO
kr 144,05
Each
Units
Barrel Ultrasonic - - 0 → 300 mm PCB - 20 V - 7.1mm - - - -
RS Stock No. 701-8229
BrandRS PRO
kr 391,26
Each
Units
Barrel Inductive M12 x 1 NPN Normally Closed 2 mm Cable - 10 → 30 V dc - 44mm - - - -
RS Stock No. 701-8238
BrandRS PRO
kr 282,67
Each
Units
Barrel Inductive M12 x 1 NPN 2 mm 4-Pin M12 Connector - 10 → 30 V dc - 65mm - - - -
RS Stock No. 896-7245
BrandRS PRO
kr 810,76
Each
Units
Barrel Capacitive M18 x 1 - 8 mm Cable - 20 → 250 V ac - 78mm 250V 15 Hz - -
RS Stock No. 896-7267
BrandRS PRO
kr 779,63
Each
Units
Barrel Capacitive M30 x 1.5 PNP 15 mm 4-Pin M12 Connector - 10 → 30 V dc - 91mm - 50 Hz - -
RS Stock No. 896-7248
BrandRS PRO
kr 749,50
Each
Units
Barrel Capacitive M18 x 1 PNP 8 mm 4-Pin M12 Connector - 10 → 30 V dc - 83.5mm - 50 Hz - -
RS Stock No. 896-7273
BrandRS PRO
kr 605,60
Each
Units
Block Capacitive - PNP 10 mm Cable - 10 → 30 V dc - 50mm - 30 Hz 20mm 10mm
RS Stock No. 701-8253
BrandRS PRO
kr 408,87
Each
Units
Barrel Inductive M12 x 1 PNP Normally Open 4 mm Cable - 10 → 30 V dc - 44mm - - - -
RS Stock No. 896-7279
BrandRS PRO
kr 1 272,39
Each
Units
Barrel Capacitive M30 x 1.5 - 15 mm Cable - 20 → 250 V ac/dc - 91mm 250V 15 (ac) Hz, 40 (dc) Hz - -
RS Stock No. 896-7276
BrandRS PRO
kr 1 272,39
Each
Units
Barrel Capacitive M30 x 1.5 - 15 mm Cable - 20 → 250 V ac/dc - 91mm 250V 15 (ac) Hz, 40 (dc) Hz - -
RS Stock No. 208-213
BrandRS PRO
kr 880,15
Each
Units
Barrel Inductive M18 x 1 PNP 5 mm 4-Pin M12 Connector - 10 → 30 V dc - 52mm - - - -
RS Stock No. 208-099
BrandRS PRO
kr 846,12
Each
Units
Barrel Inductive M8 x 1 PNP 1.5 mm 4-Pin M12 Connector - 10 → 30 V dc - 57mm - - - -
RS Stock No. 896-7241
BrandRS PRO
kr 810,76
Each
Units
Barrel Capacitive M18 x 1 - 5 mm Cable - 20 → 250 V ac - 83.5mm 250V 15 Hz - -
RS Stock No. 208-128
BrandRS PRO
kr 674,24
Each
Units
Block Inductive - PNP 15 mm 4-Pin M12 Connector - 10 → 30 V dc - 46mm - - 40mm 40mm
RS Stock No. 701-8247
BrandRS PRO
kr 425,07
Each
Units
Barrel Inductive M30 x 1.5 NPN 10 mm 4-Pin M12 Connector - 10 → 30 V dc - 71mm - - - -
RS Stock No. 896-7263
BrandRS PRO
kr 779,63
Each
Units
Barrel Capacitive M30 x 1.5 PNP 10 mm 4-Pin M12 Connector - 10 → 30 V dc - 79mm - 50 Hz - -
RS Stock No. 208-178
BrandRS PRO
kr 692,62
Each
Units
Barrel Inductive M8 x 1 PNP 4 mm Cable - 10 → 30 V dc - 40mm - - - -