Theo responded to my request immediately with a phone call. We set an appointment for the next week. When Theo arrived, he assessed the wiring and sensors that were in the house. Then he explained how the system would work, that he could integrate the smoke alarms as well, and could install it two days later. He was far and above more comprehensive with his review and explanations than the other two security companies that I met with. He replaced the motion detector, one of the sensors, and even installed a NEST thermostat at no extra charge, allowing me to integrate the climate control into the Alarm app. He was AWESOME.