... Intelligent wide-angle detection, special temperature compensation circuit design, wireless signal transmission. 3. Remote arm and disarm, automatically generates and saves ... be extended to 8G, 16G, 32G, automatic overwrite, data can be saves when power-cut, can connect with computers ... Focal Length:8mm Viewing Angle:35°(Vertical) 60°(Horizonal) Transmission Mode:USB 2.0(Hs) Recording Time: 1 minute ...