? 4 channels;? 960H/H.264 DVR;? 500GB hard drive;? Smartphone viewing, text messaging & email alerts ;? Full 960H resolution real-time 30fps recording on all channels;? 30% more viewing area recorded than standard D1 models;? Internet & 3G/4G mobile device monitoring & control;? Email & SMS text event notification with an image;? Dual-stream H.264 codec with VGA & HDMI(R) outputs ;? 396-point video motion detection (22 x 18 grid);? Pre-alarm event video storage captures activity before a trigger occurs;? Motorized pan/tilt/zoom camera control;? 4 audio input channels compatible with optional audio/microphone kits;? Free apps for mobile devices; / ONE YEAR