When investing in alarm systems, among the first choices to make is DIY versus full service. The equipment used to protect your home – mainly surveillance cameras (outdoor, indoor, and doorbell), door and window alarms, motion detectors, and a hub – have identical features and capabilities whether you go the full service or DIY route. When you want to install an alarm system, here's what you should know about each option. DIY Doing it yourself is a smart way to save money and maybe learn something new about home alarm systems. And if you find pleasure in doing handyman work around the home, it's a good idea to understand what you're walking into before you install the alarm system. Wireless Equipment The majority of new home surveillance equipment is wireless..