The RY4 Series offers a range of dedicated safety relay output switching options for use with the T4 and SG series of safety light curtains.

In addition the RY4 Series relays have been designed to provide easy connection of the T4 Series safety light curtain. The units mirror the T4 series and SG series functions for simple connection and offer a different number of normally open safety contacts for increased flexibility.

The units when used in conjunction with the T4 and SG series are suitable for applications where the control system is rated as EN ISO 13849 - 1 PL e, EN 61508 SIL 3 and BS EN 954-1, Category 4


  • Quickconnect RJ45 connectors for T4 and SG series light curtain
  • Safety Relay Contacts rated at 250V AC, 6A
  • Mirrors the full functionality of the T4 and SG light curtain
  • Contacts for External Device Monitor (EDM)
  • LED status indicators
  • Din rail mounting 52mm enclosure
  • Complies with EN ISO 138491 PL e, EN 61508 SIL3, BS EN 954-1, Category 4

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