Cal. Bus. & Prof. Code § 22760

(a) It is unlawful to sell within this state any cordless telephone manufactured after January 1, 1992, that does not provide increased protection from unintentional line seizure and dialing, and protection from unintentional ringing.
(b) For the purposes of this section, a cordless telephone is a two-way low power communication system consisting of the following two parts connected by a radio link:
1. (1) A “base” unit connected to the public switched telephone network.
2. (2) A “handset” or “remote” unit.
(c) For the purposes of this section, a cordless telephone has increased protection from unintentional line seizure and dialing, and protection from unintentional ringing, if it does either of the following:
1. (1) Provides a randomly selected preset digital security code from among at least 256 possible codes and a means for the user to manually enter a new security code in the event of interference.
2. (2) Provides a means for automatically selecting a different code from among at least 256 possible discrete codes.
(d) This section does not apply to any cordless telephone manufactured prior to January 1, 1992, whether, after the operative date of this section, it is inspected, repaired, or refurbished and returned to the original user, provided to another user in exchange for a unit needing repair, or resold.