Power is supplied through the Ethernet cable, so the network camera can be easily installed & added to the ceiling & the wall, since no additional work is required for a power outlet. Camera simultaneously sends MPEG-4 images in three resolutions (VGA, QVGA, & SCIF), & JPEG images in the same three resolutions in favor motion, standard, & favor clarity image-quality types. MPEG-4 is recommended for viewing smooth motion images, & JPEG is recommended for recording higher quality images. Sounds picked up by the built-in microphone can be heard through the PC. Video monitoring with sound enhances security by providing additional information that images cannot convey. This system supports HTTPS data encrypted communications. By encrypting the network cameras image & other data for network transmission, electronic eavesdropping is prevent which greatly improves security. Motion detection function detects changes by reacting to a camera threshold or sensitivity that is set in advance on the PC. Captured images can also be stored temporarily in the camera or sent to you by e-mail or FTP data transfer. While viewing MJPEG images by PC, it can play a sound to notify you when motion is detected or the external sensor is triggered. The external input port is connectable to various sensors & switches, which can be interlocked with the cameras.