Safety single-beam sensors

Cylindrical design for safety applications up to type 2

Your Benefits

  • Easy integration due to small, compact versions with maximum range
  • Directly connect to a safety controller – reducing costs
  • Flexible device integration makes it possible to set up individual access protections
  • Well suited to withstand extreme ambient conditions such as heat, cold or moisture


Cylindrical design for safety applications up to type 2

The L21 single-beam photoelectric safety switch consists of a sender and receiver. The test input on the sender allows direct functional tests. Performance level PL c in acc. with EN ISO 13849-1 or Type 2 in acc. with IEC 61496 can be achieved in conjunction with a safety controller. Suitable safety controllers are, for example, Flexi Classic or Flexi Soft. Color LEDs provide local information about the operational status. The required range can be selected from various device versions. All versions are suitable for outdoor applications and enable even complex safeguarding tasks to be accomplished by using deflector mirrors.

At a glance
  • Type 2 (IEC 61496), SIL1 (IEC 61508), PL c (EN ISO 13849), only in conjunction suitable testing device, e.g., Flexi Classic or Flexi Soft
  • Small M18 sensors with ranges up to 10 m
  • Compact M30 sensors with ranges up to 60 m
  • Enclosure rating IP 67
  • Temperature range from –40 °C ... 55 °C
  • Metal and plastic version
  • Radial optics (90° deflector mirror)
  • Straightforward diagnostics and service


Technical overview

  • Technical data overview

    Technical data overview

    Safety levelType 2, PL c, SIL1, SILCL1
    Scanning range5 m / 16 m / 60 m
    Construction sizeM18 / M30,
    107.7 mm
    97.7 mm
    85.3 mm
    100 mm
    Supply voltage24 V DC (19.2 V DC ... 28.8 V DC)
    Enclosure ratingIP67 (EN 60529)
    Ambient operating temperature–40 °C ... +55 °C
All technical data can be found accompanying the individual product