SIRIUS SAFETY RELAY SAFETY-RELATED SPEED MONITORING, 24 V DC, 45.0 MM, SCREW-TYPE CONNECTION, ENABLING CIRCUIT INSTANTANEOUS:2NO, ENABLING CIRCUIT DELAYED: 0, SIGNALING CIRCUIT: 2 ELECTRICAL, NAMUR VERSION, AUTO START / MANUAL START, BASIC UNIT, MAX. ERR. PL EN13849-1: E, MAX. ERR. SIL TO IEC61508:3,