The punchcard and marksense voting systems shall not produce any sounds or audible noises that would serve to indicate how an elector has voted. This applies to the noise associated with the write-in voting process. An audible tone indicating to the voter and the moderators that the vote has been recorded by the equipment and that preparations for the next voter need to be made is permissible.
Conn. Agencies Regs. § 9-242-25