Any claim or right arising out of an alleged default or breach of warranty may be discharged in whole or in part without consideration by a written waiver or renunciation signed and delivered by the aggrieved party.
Wis. Stat. § 411.107
Waiver or renunciation of claim or right after default
1991 a. 148.
Official source: Wisconsin State Legislature. Reproduced from public-domain Wisconsin statutes; confirm against the official source for the current text. Not legal advice.