8 Channel 1080p HD Video Security DVR with 1 TB HDD and 4 x 1080p Wired Infrared CamerasWhen it comes to protecting your loved ones, why not go with the best? Introducing Night Owl's state-of-the-art Smart Detection Security System. Not only does this system provide 1080p High Definition images, it also utilizes Dual Sensor Technology to ensure that you are alerted to actual threats or meaningful events. Prior to this advancement, standard security systems would send alerts to your Smart Device anytime a camera detected motion. While this was of huge benefit to our consumers, some articulated that they were receiving too many false alerts. Night Owl listened! Our Dual Sensor Technology truly takes it to the next level! By incorporating infrared sensors into the 1080p cameras, this system utilizes both motion detection and heat detection to minimize false alerts and keep you apprised of Real threats in Real time. These premium cameras use a passive infrared sensor to detect heat produced by humans, animals and vehicles. Whereas heavy rain, bugs and changes in lighting could potentially produce motion alerts on older systems, this new technology requires both changes in motion and heat be detected simultaneously. Not only does this one-of-a-kind technology significantly reduce the number of false alerts you receive, it also conserves hard drive space. This guarantees that you are made aware of those threats that pose the greatest risk to you and your loved ones without having to sift through unnecessary recordings. This truly is innovation right at your fingertips!