Control,UIM,Main,Assy,SVCE (DW2450,DW2450WS)
  DW2450  Use Starting With Serial #20063791
          Prior to Serial #20063791 See 830087
 DW2450WS Use Starting With Serial #20063791
          Prior to Serial #20063791 See 830088
  NOTE:   Contains UIM Only, For MCM See 830106 or
          830107