IS200WREAS1A is an Aeroderivative turbine emergency trip board and is part of the GE Speedtronic Mark VIeS gas turbine control. This is the daughter board of TREASIA IS220PPRASIA (or) B. input-output pack. Aeroderivative turbine emergency trip board module is one of the IS200TREASA plus WREASIA PLUS PPRASIA (or) SIB. This unit is used for Mark VIeS safety control systems. It consists of a DB connector and six solid-state relays and one pattern lock power connector and jumpers.