As an ADT customer, you'll get your monitored home security system free. That's an $850 value. You also get the ADT Quality Service Plan, an extended limited warranty covering all newly installed equipment. You don't have to pay an extra fee for this extra assurance – the cost is included in your monthly monitoring rate! Last but not least, every monitored home security system is professionally installed by a qualified technician who will show you how to operate the equipment and use the ADT monitoring features.