Accumulator,SVCE (22IM, 245, 249FF, 801, UC-24C)
  22IM    Use Starting with Serial #509241.
          Prior to Serial #509241 see 7018010.
  245     Use Regardless of Serial Number.
  249FF   Use Starting with Serial #662466.
          Prior to Serial #662466 see 7016480.
  801     Use Starting with Serial #659116.
          Prior to Serial #659116 see 7016480.
  UC-24C  Use Regardless of Serial Number.