Even if you are an old customer of the company, they continue to provide better service by checking on your security system regularly. The salesman in the area stopped by our house. Check on the Vivint smart lock and tested it if it is still accurate. Everything seems to be working very well, including the Vivint doorbell camera. If you are looking for something that will keep you safe day and night this is the best product for you. It's time for you to have the Vivint home security system. My husband and I are so happy to have this. Planning to upgrade soon once we have the budget.