Got a simple system that you need to keep safe to SIL 3 and PL e levels? Look no further than the SIRIUS 3SK1 Serie of safety relays from Siemens. Designed for flexibility and ease of integration, the platform is targeted at simple safety-critical operations such as emergency stops, two-hand operator panels, light curtains up to protective door monitoring. The series is constructed as a clear modular system, so that users of installations can quickly, easily and cost-effectively put together a good and safe configuration.