(a) In addition to any other right to revoke an offer, the buyer has the right to cancel a home solicitation contract or offer until midnight of the third business day after the day on which the buyer signs an agreement or offer to purchase which complies with Section 1689.7.

(b) In addition to any other right to revoke an offer, any buyer has the right to cancel a home solicitation contract or offer for the purchase of a personal emergency response unit until midnight of the seventh business day after the day on which the buyer signs an agreement or offer to purchase which complies with Section 1689.7. This subdivision shall not apply to a personal emergency response unit installed with, and as part of, a home security alarm system subject to the Alarm Company Act (Chapter 11.6 (commencing with Section 7590) of Division 3 of the Business and Professions Code) which has two or more stationary protective devices used to enunciate an intrusion or fire and is installed by an alarm company operator operating under a current license issued pursuant to the Alarm Company Act, which shall instead be subject to subdivision (a).

(c) In addition to any other right to revoke an offer, a buyer has the right to cancel a home solicitation contract or offer for the repair or restoration of residential premises damaged by disaster that was not void pursuant to Section 1689.14, until midnight of the seventh business day after the buyer signs and dates the contract.

(d) Cancellation occurs when the buyer gives written notice of cancellation to the seller at the address specified in the agreement or offer.

(e) Notice of cancellation, if given by mail, is effective when deposited in the mail properly addressed with postage prepaid.

(f) Notice of cancellation given by the buyer need not take the particular form as provided with the contract or offer to purchase and, however expressed, is effective if it indicates the intention of the buyer not to be bound by the home solicitation contract or offer.

(g) "Personal emergency response unit," for purposes of this section, means an in-home radio transmitter device or two-way radio device generally, but not exclusively, worn on a neckchain, wrist strap, or clipped to clothing, and connected to a telephone line through which a monitoring station is alerted of an emergency and emergency assistance is summoned.