Zmodo 16CH DVR CCTV Kits security cameras system w/ 8 Outdoor Bullet+ 8 Indoor Dome 600TVL Hi-Resolution Video Surveillance Cameras 1TB HDD 600TVL Hi-Resolution Camera Instand email alert with photo if activity detected When everyone else is asleep, our cameras are watching closely The metal housing is designed for indoors & outdoors use 1TB hard drive allows for 24/7 recording over 8 days