wireless monitor system

1.4CH digital wireless camera & DVR system2.Simple installation- no cables required3.Total digital wireless , no interferences, no privacy leak4.7" LCD monitor with integrated video recorder5.Support up to 32GB SD card and external (not include)6.Support 4 cameras/ 24hours/7days  non-stop overwrite recording7.Multiple recording modes: manual, schedule ,and motion activated8.15meter night vision range9.Video quality: 4CH  VGA 10fps , 1CH  VGA 30fps10.Weather proof outdoor cameras with 300m/1000ft transmission open range11.Video output function for bigger monitor                                                 http://www.doorbellalarm.com/