I Max Power Door view recorder is best product for your home security, It is working 24 hours a day keeping an eye on visitors to your home or business See who's at the door before you open and record, it is High Camera Pixel: VGA COMOS Sensor High-pixel images improve the chances of identification and allow images to be easily enlarged, In the event of an incident you can recover your memory card and playback time and date stamped photos or video on your PC either directly through a card reader. Store over 11 hours of video using SD card. It is completely self contained being battery powered with an DC adaptor (It build in Rechargeable Battery Li-polymer, 3.7V, 2, 200 mAh). Each time motion is detected within 1.2 meters Its wide angle lens gives an excellent view and records.