The SCADAPack Series of controllers are powerful on their own but are also expandable through the Control Microsystems 5000 Series of I/O Expansion and Communication modules. Starting with as few as 11 process I/O points, any SCADAPack controller (except SCADAPack 100) can be expanded to over 700 process I/O points, using up to twenty 5000 Series I/O Expansion modules.