SIRIUS, Extension module 3RK32 for modular Safety system 3RK3 2/4 F-DI, 1/2 F-RO, 24 V DC/1 A Can be parameterized via MSS ES 22.5 mm overall width screw terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) without connection cable