Penal Code § 466.9
CHAPTER 3. Burglarious and Larcenous Instruments and Deadly Weapons
(a) Every person who possesses a code grabbing device, with the intent to use it in the commission of an unlawful act, is guilty of a misdemeanor.
(b) Every person who uses a code grabbing device to disarm the security alarm system of a motor vehicle, with the intent to use the device in the commission of an unlawful act, is guilty of a misdemeanor.
(c) As used in this section, “code grabbing device” means a device that can receive and record the coded signal sent by the transmitter of a motor vehicle security alarm system and can play back the signal to disarm that system.