The Lorex TD81825A4-E Smart 4K 8-channel 2TB DVR with 4 5MP Deterrence Bullet Cameras is a comprehensive home surveillance system designed for both indoor and outdoor use. With features such as remote triggered siren, infrared/night vision capabilities, and smart home compatibility with Amazon Alexa, this system provides advanced security measures to protect your home. The wired connectivity ensures reliable transmission of footage, while the 2TB storage capacity allows for ample storage space for recordings. With the inclusion of 4 high-quality bullet cameras, this system offers a comprehensive and effective solution for home surveillance.