Photoelectric Sensors
Photoelectric Sensor | Adjustable 10cm-2m Range | Infrared Beam
TBS-06114SENS-00060
£4.99
Photoelectric Sensors
31 products available
Looking for a reliable photoelectric sensor or industrial photoelectric switch to manage your automated assembly lines, conveyor systems, or access controls? Compel supplies a comprehensive range of optical sensing solutions engineered for industrial and trade environments. Our inventory spans high-performance through beam sensor setups, space-saving diffuse photoelectric sensor models, and dependable retroreflective sensor units designed to handle challenging factory floor conditions.
Whether you are replacing an existing M18 barrel sensor on a packaging line or integrating low-voltage infrared distance modules into custom machinery, Compel provides clear technical specifications and ready-to-ship stock. We help maintenance teams and system integrators minimize downtime by matching exact electrical outputs, mounting configurations, and detection ranges to their specific automation needs.
31 products in Photoelectric Sensors
Photoelectric Sensors
Infrared Photoelectric Sensor | 3-80cm Obstacle Avoidance Switch
TBS-06072SENS-00034
£12.99
Photoelectric Sensors
M18 Diffuse Reflective Photoelectric Sensor | 30cm Sensing
TBS-06069SENS-00031
£11.99
Showing page 2 of 2 (31 products)
Choosing the Right Sensing Mode (Diffuse vs. Retroreflective)
Selecting the correct optical setup depends entirely on your physical layout and target characteristics. Diffuse reflective models, such as the CDD-11N and E3Z-D61, project light and detect the reflection directly off the target object. This design simplifies installation because you only need to wire a single sensor housing on one side of the line.
For longer distances or high-contrast environments, retroreflective configurations or through-beam systems are preferred. For instance, our long-range infrared beam models can span up to 15 meters using a dedicated reflector, making them ideal for wider gates, entryways, or heavy machinery clearance zones.
- Diffuse Reflection: Best for short-range detection up to 3 meters where mounting space is restricted.
- Retroreflective / Feedback Reflection: Ideal for mid-to-long ranges, utilizing a reflector opposite the sensor.
- Through-Beam: Offers the longest range and highest reliability in dirty or dusty environments.
Matching Electrical Output and Operating Voltage
Industrial controllers require specific digital outputs to process signals correctly. You must match the sensor's output style, either NPN (sinking) or PNP (sourcing), with your PLC or control module input requirements. Many of our standard diffuse-reflective models support both configurations or offer dedicated NPN/PNP options to simplify integration.
Voltage compatibility is equally critical. Standard factory automation lines usually run on 12-24V DC or 10-30V VDC, while microcontrollers and obstacle-avoidance modules often operate on a 5V DC logic level. Always verify your system's power supply limits before ordering to prevent component damage.
Adjustability and Detection Range Limits
Fixed-range sensors can suffer from background interference if a reflective object passes behind your target. Selecting a sensor with an adjustable range, like our M18 models with 10cm to 2m or 3cm to 80cm limits, allows you to fine-tune the detection threshold.
This adjustment helps ignore background machinery or walls, ensuring the sensor only triggers when the intended object breaks or reflects the infrared beam.
Buying guide
Choosing Photoelectric Sensors
- How do I choose between an NPN and a PNP photoelectric switch?
- It depends on your PLC or controller's input requirements. An NPN output switches the load to the negative ground, which is common in many Asian-manufactured control systems. A PNP output switches the load to the positive voltage rail, which is standard in most European industrial automation systems.
- What is the maximum sensing distance for your diffuse photoelectric sensors?
- Our diffuse reflective models generally cover ranges from 3 cm up to 3 meters, depending on the model selected. For example, the E3Z-D61 detects targets up to 30 cm away, while larger adjustable M18 models can reach up to 2 meters or 3 meters. If you need longer ranges, consider a retroreflective or through-beam sensor, which can extend up to 15 meters.
- Which photoelectric sensor is best for outdoor perimeter or gate monitoring?
- Outdoor applications require a sensor with a dedicated waterproof enclosure and a longer detection range. A long-range infrared retroreflective sensor operating on 12-24V DC/AC with a reflector cover is ideal for automatic gates up to 15 meters wide. For off-grid security areas, a solar-powered wireless motion sensor alarm with an integrated siren and strobe light is the most practical choice.
- Why is my diffuse photoelectric sensor triggering on background objects?
- This usually happens when the background material is highly reflective or too close to the target detection zone. To resolve this, choose a sensor with an adjustable detection distance, such as the CDD-11N, and dial back the sensitivity until the background is ignored. Alternatively, you can angle the sensor slightly so the background reflection does not bounce directly back to the receiver.
- Are these photoelectric sensors rated for low-voltage safety compliance?
- Yes, many of our industrial photoelectric sensors operate well below standard low-voltage thresholds, utilizing 5V, 12-24V DC, or 10-30V DC power supplies. Under European Low Voltage Directive guidelines, equipment operating below 50V AC or 75V DC is classified as low voltage, reducing electrical hazards during installation and maintenance. Check the specific product datasheet to verify exact voltage limits and compliance marks.