Safety light curtains

The smallest light curtain with the highest protection level, PL e

Your Benefits

  • Cost-effective machine integration: the miniature design, cascading, and fine stepping of the protective field lengths enable flexible adaptation to the machine design
  • Standardization saves time and resources by making logistics, order processing, and service more straightforward
  • Exemplary handling: software-free, almost fully automatic commissioning and intuitive operation with sustainable optics
  • LED-guided start-up together with colored LEDs for quick alignment and unequivocal protective field visualization ensure rapid diagnostics
  • A continuous protective field for cascade applications eliminates blind zones, reduces the safety distance, and thereby increases productivity
  • Application-specific brackets increase mounting flexibility, while reducing the mounting time


The smallest light curtain with the highest protection level, PL e

The miniTwin4 safety light curtain is the smallest electro-sensitive protective device of its kind. It is mainly used at hazardous points for finger and hand protection. The miniTwin, which is based on a twin stick design, combines the technologies of both sender and receiver into one compact housing unit. Whether it is used as a stand-alone device or it is cascaded with other miniTwin light curtains, the miniTwin4 enables machine access protection up to the highest safety level, PL e. Protective field heights, in 60-mm increments, from 120 mm to 1,200 mm are available and it is possible to cascade up to three systems. Commissioning, which is almost completely automatic, requires no software. This along with the bracket sets saves valuable installation time. The miniTwin4 offers a modern, industrial design that combines an intuitive operating system with sustainable optics.

At a glance
  • Type 4 (IEC 61496), SIL3 (IEC 61508), PL e (EN ISO 13849)
  • Compact cross section (15 mm x 32 mm) with no dead zones
  • Cascadable twin stick design – sender and receiver in a single housing
  • Customized protective field heights in 60-mm increments from 120 mm to 1,200 mm
  • Typical scanning ranges 0 m ... 5 m
  • Intelligent, software-free configuration of external device monitoring (EDM) and reset function (RES)
  • M12, 5-pin device connection


By partnering with us, you can benefit from our expertise in the functional safety of productivity-increasing safety solutions. So that your processes run smoothly, man and machine work as a team, and we can jointly push the boundaries of what is achievable.

Boost your productivity - with safety solutions from SICK


Technical overview

  • Technical data overview

    Technical data overview

    Safety levelType 4, PL e, SIL3, SILCL3
    Resolution14 mm / 24 mm / 34 mm
    Scanning range5 m
    Protective field height120 mm ... 1,200 mm
    Enclosure ratingIP65
    Ambient operating temperature–20 °C ... +55 °C
All technical data can be found accompanying the individual product