ANNKE 8CH 3MP TVI/CVI/AHD/IP/CVBS HD Surveillance Recorder 5-in-1 Security DVR with HDMI Output, Email Alert with Images and H.264+ Compression, NO HDD Double Your Storage With H.264+: With the latest H.264+ compression, your storage space is Tripled. It lowers the recording bitrate and the video bandwidth, which results in smaller video size. You can store more footage with the same storage space. Now, your 1TB hard disk can be used as 3TB or more. Quick remote access: The camera can be accessed and controlled remotely to your whole surveillance via the APP on your mobile devices. Review and watch live videos from every corner of the world. Intelligent motion detection email alert with images; Smart playback available with customizable searching area (needs an internal hard disk drive, it can't record or playback without hard drive, please search ASIN ON AMAZON: B01G72GAOE for 1TB Surveillance Hard Drive Disk) Powerful 5-in-1 DVR: Apart from the default TVI format, this powerful DVR also supports CVI/AHD/CVBS and IP cameras, whether you want to make the most of your old cameras or add new ones some day are both good choices. Worry-Free Warranty: All ANNKE products have passed CE & FCC, HDMI Senior Member certified and ISO 9001 certified. Easy-to-reach lifetime telephone and email support, 3-year warranty and 60-day money back guarantee.