ANNKE 24-Channel HD-AHD 720P Digital Video Recorder, Real-Time High Resolution Surveillance DVR Recorder, HDMI 1080P Video Output Security Standalone DVR Video Recorder, No HDD Included 24 Channel 720P high definition digital video recorder for stunning video recording. Super easy one step network connection by scanning the QR-Code for peace of mind. Remote viewing anytime anywhere on your smartphone, tablet and PC.Smart motion detection works perfectly with instant email alert. Support analog, HD analog and network connection, flexible surveillance choice. It works perfectly with 720P/1080N or below HD-AHD camera systems(not included, available separately), not compatible with HD-TVI/CVI cameras and 1080P HD-AHD cameras System.