Additionally, the system can be set up to control the heat, lights, and locks in the house remotely as well. They can generally detect motion from 40 to 80 feet away and can be connected to your home alarm system or to a security camera. There are two main types of home security motion sensors: active detectors,whichemit light, sound or other forms of energy and recognize when that energy is being disturbed; or passive detectors, which recognize incoming signals sent from the disturbance, such as heat or sound waves. DIY smart home security systems let you monitor your home from any location using a mobile app. They typically have lower monthly costs, are easy to install yourself and are easy to relocate or adjust based on your changing needs. Cost estimates for Ooma Home Security would total $469.