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SICK has unveiled its next-generation L25 and L26 family of single-beam photoelectric safety switches, equipped with SICK’s “BluePilot” alignment and IO-Link for smart, real-time communication, ensuring maximum machine uptime while protecting personnel from hazardous machinery.

With a long scanning range up to 50 metres, the SICK L25 and L26 are Type 2 devices available in visible red light and infra-red (IR) versions for wide versatility in safety applications up to PL c (SIL 1).  The IR and red-light versions could also be used together to avoid the potential for signal interference and introduce redundancy for applications requiring a higher level of safety.

Rugged and robust, the SICK L25 and L26 single-beam safety sensors are ideal for collision- or access protection of barriers, gates, doors or racking systems, including over multiple access points at longer scanning distances.  With the ability to cascade up to four pairs of sensors, the versatile L25 and L26 can also be combined to achieve effective perimeter guarding of machines, or access protection to robot cells or machine-tending areas, including the option to use instead of a light curtain in space-limited machine designs.

“SICK’s new generation of smart safety switches are set to become the reliable workhorses of many common protective applications even in the most challenging industrial environments,” explains Dr Martin Kidman, safety specialist with SICK UK.

“The newly-incorporated IO-Link connection means operators can know the condition of each single safety sensor in real-time, so productivity is not compromised by unplanned stoppages.  Timely alerts are sent if safe operation is at risk, for example, due to contamination on the sensor or vibration. Equally importantly, the reasons for any safety stops can be quickly identified so that production is resumed without delay.”

The SICK L25 has a scanning range up to 20m, and the L26 up to 50 metres. Both use SICK’s PinPoint LED technology to achieve an accurate, intense, eye-safe light-spot which makes set-up and commissioning of the sensor straightforward.  With added guidance SICK’s BluePilot on-sensor alignment, sensors and reflectors can be set up quickly and precisely and time-consuming adjustments are avoided.

With an ultra-rugged, IP66, IP67 and IP69K-rated VISTAL® housing, the SICK L25 and L26 sensors have an operating temperature range of -40 °C to +60 °.  Capable of withstanding even extreme chemical, thermal and mechanical conditions, the safety sensors therefore offer the assurance of maximum availability and a reliable, long service life.

The SICK L25 and L26 smart safety sensors are easily incorporated into common protective applications, supported by a standardised range of flexible mounting options, reflectors and M12, 4-pin connectors.  An easy-to-fit adaptor is available for SICK customers wishing to upgrade from SICK’s L27 L28 safety switches.

For more information please contact Andrea Hornby on 01727 831121 or email


SICK is a global leader in sensors and sensing systems for factory automation, logistics automation and process control. SICK’s comprehensive product portfolio encompasses sensors, encoders, machinery safety, machine vision and auto-identification in use by customers all over the world. Established for over 70 years, SICK products range from simple optical devices through to embedded intelligent systems, ready to meet the needs of Industry 4.0.

SICK sensors: At the heart of automation

SICK is one of the world’s leaders in sensors and sensing technologies for factory automation, logistics automation and process control.

SICK’s comprehensive product portfolio encompasses sensors, encoders, machinery safety, machine vision and auto-identification. The company also provides process instrumentation for gas and fluid flow and for chemical and pollutant detection.

From simple optical sensors and barcode readers to complex safety systems; from machine vision to emissions monitoring, SICK’s intelligent sensor solutions facilitate advanced automation and process control.

SICK products are designed with simplicity of installation and operation in mind. They help customers to achieve greater reliability and productivity, increased production flexibility and more efficient use of resources.

Founded in Germany more than 70 years ago, SICK employs more than 7,400 employees worldwide. The company invests heavily in research and development and is leading the way in smart sensor development to support Industry 4.0 objectives.

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