General system video server cameras wireless wireless frequency band 24 ghz package content power adapter 4 magnetic mounts 4 mounting screws window decal 12 lithium batteries cr123 cables included network cable 1 pcs security dvr compression format h264 video server ram 64 mb flash memory 16 mb features led indicator cameras quantity 3 cameras camera type outdoor sensor cmos field of view 130 degrees night vision yes infrared distance 75 m