Aposonic H.264 8-Channel AHD 720P / 960H Hybrid Recording Surveillance CCTV Standalone DVR, HDMI/VGA Dual Output, Mobile Access, Mac Ready (No HDD) 960H/D1/Half D1/CIF/AHD Full Real-Time Recording / Playback Quality. Recording 960x480 / 720x480 / 720x240 / 360x240 Resolution at 30 FPS per channel, or recording 1280x720 on AHD cameras at 30 FPS. 1x HDD bay, support up to 4TB. 1 x Audio-in / out, RS485 port x1. Firmware upgradable. DVR Motion detection triggered events can be promptly notified by loud audible alert and / or Email notifications to PCs or smart phones. Dual streaming technology to encode recording stream and network stream separately. Support NAT function, QR code scanning by mobile devices. Live view and access control through Internet Explorer, Firefox, Chrome, and Mac OSX/Safari. Streaming live video / playback on mobile smart phones or tablets via free app.