Read our full Nest Cam IQ Outdoor review. 98 View at AmazonIt wasn't all that long ago that having a home security system meant signing up with a company that would send a professional installer to your house to drill holes in your walls and run wires throughout your home. In most cases the equipment was free, but you had to commit to a multi year monitoring contract as part of the deal. There are still a handful of security companies such as ADT, Slomin's, and Vivint, that will send a consultant out to your house to configure a system specifically tailored to your home and then send a team of professionals to install everything, but more and more companies are offering do it yourself DIY home security solutions. DIY home security systems come in all shapes and sizes. Some systems come with an LCD panel that serves as the brains of the system.