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SPECIAL PROMOTION — Up to 40% off across many product groups, until 31 December 2026 · Click to see all promotion itemsIFM, Sensor, Automation SystemMeasuring / Testing InstrumentsTemp Indicator, Control, T/C, RTD, TimerHeater, SCR Control, Solid State, Power Supply, Control CabinetField Measuring Instruments, Pressure Gauge, Level Control, Flow MeasurementEMC, Pneumatic, Solenoid ValveInspection Test Lamp, Head Light, Automotive Measuring InstrumentWeighing Scales, Marking Machine, PrintersEducational Training SystemsHot Line Tools & Equipment SPECIAL PROMOTION — Up to 40% off across many product groups, until 31 December 2026 · Click to see all promotion itemsIFM, Sensor, Automation SystemMeasuring / Testing InstrumentsTemp Indicator, Control, T/C, RTD, TimerHeater, SCR Control, Solid State, Power Supply, Control CabinetField Measuring Instruments, Pressure Gauge, Level Control, Flow MeasurementEMC, Pneumatic, Solenoid ValveInspection Test Lamp, Head Light, Automotive Measuring InstrumentWeighing Scales, Marking Machine, PrintersEducational Training SystemsHot Line Tools & Equipment View promotion items View all

Photo sensors

What are Photo Sensors?

SCMA has been officially appointed as the sole authorized distributor of ifm in Thailand. 

Photo sensors (photoelectric sensors) are sensors that can detect objects of all types, including long-range detection and non-contact object detection. They are suitable for applications where the detection range exceeds what proximity switches can achieve.

Benefits of Photo Sensors

  • High accuracy in detecting small objects quickly and accurately
  • Long-range detection capabilities, allowing for the detection of objects at greater distances than other types of sensors
  • Versatile environmental use, resistant to dust, humidity, and a range of temperatures
  • Fast response time suitable for high-speed production line detection

Why Choose Photo Sensors from ifm?

ifm electronic, a global brand specializing in the production and distribution of automatic sensor systems for industrial applications, offers high-quality products that enhance efficiency and reliability in smart factories. The technology includes IO-Link, which is crucial for developing intelligent industries by improving production efficiency, reducing errors, and enhancing process control accuracy to ensure excellent product quality.

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Frequently Asked Questions (FAQ) – Photo Sensors from IFM

1. What is a photo sensor?

A photo sensor (photoelectric sensor) is a device that uses a beam of light to detect the presence, position or movement of an object in an automated production process.

2. What are IFM photo sensors used for?

They are widely used to detect workpieces on conveyors, count products, check part positions and control machine operation in automation systems.

3. How many types of photo sensor are there?

Generally three main types: through-beam sensors, retro-reflective sensors and diffuse reflection sensors. Each type suits a different kind of application.

4. Can photo sensors detect transparent objects?

Yes. Some IFM photo sensor models are designed specifically to detect transparent objects such as glass bottles, film or clear plastic packaging.

5. Can photo sensors detect black objects or glossy surfaces?

Yes. Models with advanced detection technology can accurately detect dark objects, glossy surfaces or reflective materials.

6. What sensing range do photo sensors have?

The range depends on the sensor type and model, from just a few millimetres up to several tens of metres for industrial applications.

7. Do IFM photo sensors support IO-Link?

Many models do, allowing convenient parameter setting, operating data readout and sensor status analysis through the IO-Link system.

8. Which industries are photo sensors suitable for?

They can be used in automotive, food and beverage, packaging, logistics and electronics industries, and in general automation systems.

9. How does a photo sensor differ from an ultrasonic sensor?

A photo sensor uses light to detect objects, so it responds quickly and suits high-speed applications. An ultrasonic sensor uses sound waves and suits transparent objects or surfaces that are difficult to detect optically.

10. How should a photo sensor be selected for the job?

Consider the object type, sensing range, operating environment, production process speed and the required output type, to get the best possible performance.

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  • Photo sensors 645items
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IFM_type_light
  1. infrared light 5items
  2. red light 56items
IFM_housing
  1. M12 15items
  2. M18 118items
  3. M30 12items
  4. rectangular 439items
IFM_sensing_range_mm
  1. 15 7items
  2. 30 7items
  3. 40 6items
  4. 50 11items
  5. 70 3items
  6. 80 10items
  7. 100 26items
  8. 150 7items
  9. 180 6items
  10. 200 64items
  11. 300 12items
  12. 400 19items
  13. 500 24items
  14. 600 22items
  15. 700 5items
  16. 800 6items
  17. 1000 5items
  18. 1800 6items
IFM_voltage_type
  1. DC 61items
IFM_electrical_design
  1. NPN 154items
  2. PNP 377items
  3. relay 13items
IFM_output_function
  1. complementary 9items
  2. dark-on mode 70items
  3. light-on mode 100items
  4. light-on/dark-on mode; (programmable) 216items
  5. light-on/dark-on mode; (selectable) 103items
  6. normally open / normally closed 6items
  7. normally open / normally closed; (parameterisable) 6items
IFM_connection
  1. 0.15 m PVC-Cable 8items
  2. 10 m PVC-Cable 1item
  3. 6 m PUR-Cable 2items
  4. M6 connector 4items
  5. 0.3 m PUR-Cable; M12 Connector 21items
  6. 0.3 m PVC-Cable; M12 Connector 16items
  7. 0.3 m PVC-Cable; M8 Connector 34items
  8. 1/2" Connector 11items
  9. 2 m PUR-Cable 32items
  10. 2 m PVC-Cable 55items
  11. 5 m PUR-Cable 11items
  12. 6 m PVC-Cable 15items
  13. M12 connector 191items
  14. M8 Connector 161items
  15. terminals: ...2,5 mm² 39items
IFM_range_mm
  1. < 25 m 1item
  2. 1...400 2items
  3. 1...50 1item
  4. 1...80 4items
  5. 10...400 1item
  6. 100...2600 1item
  7. 15...200 1item
  8. 2...200 11items
  9. 2...800 1item
  10. 5...600 2items
  11. 50...1400 1item
  12. 50...1800 2items
IFM_range_m
  1. < 3 3items
  2. < 10 8items
  3. 15 1item
  4. < 15 1item
  5. < 25 3items
IFM_range_prismatic_m
  1. 0.02...1.8 4items
  2. 0.03...5 2items
  3. 0.05...2.5 1item
  4. 0.05...5 10items
  5. 0.075...10 2items
  6. 0.3...22 2items
IFM_background_sup_available
  1. Yes 20items
IFM_prddesign
  1. Diffuse reflection sensor 27items
  2. Retro-reflective sensor 20items
  3. Through-beam sensor 14items
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