Each time we update our reviews, we also update our scores based on how customers currently perceive the products. We do this by extensively researching user reviews at retailers
such as Amazon, Best Buy, Home Depot and Lowe's. When we test, we borrow some of the DIY security
systems from their manufacturers and buy others. Although we may reach out for technical support or for clarification on a particular feature, the companies have no input on our testing practices and we don’t share our results or rankings with them before publishing our reviews. As we researched this topic and security systems in general, we reached out to Jamie Vos, vice president of the Electronic Security Association ESA for his thoughts on DIY systems. He emphasized professional monitoring for security systems: “If you receive a text alert, you may not be in a condition to respond and you may not hear an alarm.