SIRIUS, central module 3RK3 Advanced for modular safety system 3RK3 4/8 F-DI,1F-RO,1 F-DO,DC 24 V Monitoring of ASI slaves Control of 12 safe outputs on the AS-Interface bus parameterizable with SW Safety ES 45 mm width Spring-loaded terminal up to SIL3 (IEC 61508) up to Performance Level E (ISO 13849-1) 9 expansion modules can be connected Central module SIRIUS 3RK3 for complex safety applications with AS-Interface connection.