SIRIUS SAFETY RELAY SAFETY-RELATED SPEED MONITORING, 110 - 240 V AC/DC, 45.0 MM, SPRING LOADED 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,