VideoSecu 4 x Outdoor IR Night Vision 520TVL Home CCTV Surveillance Security Cameras 36 Infrared LEDs Weatherproof Built-in Mechanical IR-Cut Filter Switch with 1 of 4 Channel Power Supply WK7 Built in with dual-filter day & night auto switching Aluminum housing with metal bracket. 520 TV lines high resolution Built in f6mm lens and 36 IR LEDs for night vision. Signal system: NTSC Adjustable mount, can be mounted on the wall or ceiling Package included: 4 x CMOS infrared cameras and 1 x 12V DC 4 port power supply