System board for Schneider Electric, Tricon CX series by Triconex, For 16-channel universal I/O card 3902(A)X, For 16 modules, Recommended modules: HiC2027 (AI), HiC2027ES (AI), HiC2821 (DI), HiC2831R4 (DI), HiC2841 (DI), HiC2853R4 (DI), 24 V DC supply, Hazardous area: pluggable screw terminals, blue, Non-hazardous area: screw terminals, black, Non-hazardous area: Sub-D connector (male), 50-pin, Up to SIL 3 acc. to IEC/EN 61508, Number of modules: 16, Signal type: Universal, Manufacturer: Triconex