Licença para cancelamento do ruído ao usar um equipamento com determinados microfones

Motorola HKVN4371 HKVN4371A for DM4400e

• HKVN4371A
  Single Input Noise Cancellation (SINC+) - licence key HKVN4371A for Motorola DM4400, DM4401, DM4600, DM4601, DM4400e, DM4401e, DM4600e and DM4601e.
• HKVN4371
  Single Input Noise Cancellation (SINC+) - Licence Key for DM4400, DM4401, DM4600, DM4601, DM4400e, DM4401e, DM4600e and DM4601e