Flexi Classic/Main Module, Power Supply: 24 VDC (PELV Or SELV), Connection: Plug-In Screw Type Spring Terminal, Enclosure: IP40 Housing, IP20 Terminal, Temperature Rating: -25 To 55 DEG C Ambient, -25 To 70 DEG C Storage, Power Consumption: Less Than Or Equal To 3 W (DC), Dimensions: 22.5 MM Width X 96.5 MM Height X 120.6 MM Depth, Mission Time: 20 YR (EN ISO-13849), Vibration Resistance: 5 - 500 HZ For 3 G RMS (EN 60068-2-64), Interfaces: Number Of Inputs: 2 Dual-Channel/4 Single-Channel, Number Of Muting Sensors: 0 - 2, Number Of Outputs: 2 Dual-Channel Or 4 Single-Channel, Delay Time (Outputs Q3/Q4): 0 - 5 S, Switch-On Time: Less Than Or Equal To 60 S, Residual Ripple: Less Than Or Equal To 10 PCT, Standard: C/US UL Listed, CE Certified, Meets SIL 3 Per IEC 61508, SILCL 3 Per EN 62061 And Category 4 EN ISO 13849, PL e Per ISO 13849, Climate Conditions According To EN 61131-2 And ENÂ 55011, EMC Class A (EN 61000-6-2, EN 55011), III (EN 61140) Protection Class