(1m)    Definitions. In this section:

      (a)    “In writing” or “written” includes a communication that is transmitted or received by electronic means.

      (b)    “Sign” includes executing an electronic signature.

   (1r)   Method. An action required or permitted to be taken at a board meeting may be taken without a meeting if a consent in writing setting forth the action is signed by all of the directors then in office. If the articles of incorporation or bylaws so provide, an action required or permitted to be taken at a board meeting may be taken by written action signed by two-thirds of the directors then in office.

   (2)   Effectiveness. A consent under this section has the same force and effect as a vote of the board of directors taken at a meeting and may be described as such in any articles or document filed with the department under this chapter. The written action is effective when signed by the required number of directors, unless a different effective date and time are specified in the written consent. If written notice is required under sub. (3), the written action shall be effective on the date specified in the written consent or on the 10th day after the date on which written notice under sub. (3) is given, whichever is later.

   (3)   Notice; liability. If written action is permitted to be taken by less than all directors, all directors must be noticed immediately of the text of the written consent and of its effective date and time. Failure to provide notice under this section does not invalidate the action taken by written consent under this section. A director who does not sign or consent to the action taken by written consent is not liable for the action.

   (4)   Consent effective at future time. Any person, whether or not then a director, may provide, whether through instruction to an agent or otherwise, that a consent to action will be effective at a future time, including a time determined upon the happening of an event, and such consent shall be considered to have been given for purposes of this section at such effective time so long as the person is then a director and did not revoke the consent prior to that time. Any such consent shall be revocable prior to its becoming effective.