Minimum $99.00 customer installation charge, your actual installation costs may vary depending on options chosen. Requires a 36 -- month monitoring agreement starting at $33.99 per month ($1, 079. 64). Form of payment must be by credit card or electronic charge to your checking or savings account. Offer applies to homeowners only. Local permit fees may be required. Satisfactory credit history required. Certain restrictions may apply. Offer valid for new ADT Authorized Dealer customers only and not on purchases from ADT Security Services Canada, Inc. Other rate plans available. Cannot be combined with any other offer.