Non-contact safety switches
TR4 Direct

RFID safety switch for door monitoring with manipulation protection

Your Benefits

  • High level of manipulation protection due to individually coded actuator (depending on the type)
  • High level of machine availability due to large door offset tolerances and periphery indicator
  • High level of reliability due to resistance to shock and vibration
  • Economical solution due to series connection of up to 30 sensors
  • Long product service life due to low-wastage and low-maintenance configuration
  • Fast diagnosis via LED status indicator
  • The devices are easy to clean, making them ideal for use in highly contaminated areas or applications with stringent hygienic requirements
  • Flexi Loop: Reliable series connection including diagnostics with minimal wiring work


RFID safety switch for door monitoring with manipulation protection

The TR4 Direct RFID safety switch is used for applications where a high level of manipulation protection is required.

TR4 Direct has monitored semiconductor outputs (OSSD) and can therefore be connected directly to a safety controller. The safety switch is only released if a valid actuator is located within the response range of the TR4 Direct. Two actuation principles are available: For universally coded variants, any universally coded actuator can be located in the response range. For uniquely coded variants, only the uniquely coded actuator that has been taught in with the matching code stored may be located within the response range. Up to 30 safety switches, all with LED status indicators, can be connected in series, thereby making electrical installation and service both straightforward and convenient.

At a glance
  • Response range of up to 25 mm
  • Unique and universally-coded sensors up to enclosure rating IP 69K
  • Up to performance level PL e (EN ISO 13849)
  • Two OSSD safety outputs
  • Reliable series connection of up to 30 sensors possible (depending on the variant)
  • LED status indicator
  • Periphery indicator and magnetic holding force (optional)
  • Flexi-Loop-compatible M12 plug connector (depending on the variant)


Technical overview

  • Technical data overview

    Technical data overview

    Sensor principleRFID
    Safety integrity levelSIL3 (IEC 61508)
    CategoryCategory 4 (EN ISO 13849)
    Performance levelPL e (EN ISO 13849)
    Actuator coding level

    Low coding level (EN ISO 14119)

    High coding level (EN ISO 14119)

    Type of outputSelf-monitoring semiconductor outputs (OSSDs)
    Number of safe outputs2
    Connection typeCable with plug M12, 8-pin / cable with plug M12, 5-pin / cable
All technical data can be found accompanying the individual product