Cal. Civ. Code § 1798.192

Any provision of a contract or agreement of any kind that purports to waive or limit in any way a consumer’s rights under this title, including, but not limited to, any right to a remedy or means of enforcement, shall be deemed contrary to public policy and shall be void and unenforceable. This section shall not prevent a consumer from declining to request information from a business, declining to opt-out of a business’s sale of the consumer’s personal information, or authorizing a business to sell the consumer’s personal information after previously opting out.