What hidden fees does ADT have?

What hidden fees does ADT have includes several costs beyond advertised monthly monitoring that customers should watch for. First is installation fees $99 to $199 for professional installation, sometimes waived with promotion but often added. Second is early termination fee if you cancel before 3 year contract ends, typically 75 percent of remaining contract balance, which can be hundreds of dollars. Third is equipment costs, basic package may be advertised as free but actually financed over contract, and premium equipment like cameras and smart home devices cost extra upfront. Fourth is service and maintenance fees for technician visits after warranty $100 plus. Fifth is price increase after initial term, introductory rate $28.99 may increase to $50 plus after first year. Sixth is moving fees $149 to relocate system. Seventh is alarm permit fees that some cities require, ADT may not include. Eighth is cellular backup fees included but some packages charge extra for cellular. Ninth is cancellation requiring written notice and return of equipment with restocking fees. To avoid hidden fees, read contract carefully, ask for total cost in writing including all fees, ask about price lock guarantee, and consider ADT Self Setup with no contract and no hidden fees.