VideoSecu 4 x Outdoor Bullet Security Cameras Day Night 36 Infrared LEDs 520TVL High Resolution IR-Cut Filter Switch CCTV Home Surveillance with Power Supply and Video Power Cables WM9 Built-in light sensor. Built-in mechanical IR-Cut filter switch 36 IR illuminators for night vision. NTSC signal system High Resolution camera up to 520 TVL. Built-in 6.0mm Lens Affordable day night CMOS security camera. Easy connection to TV, VCR, quad processor or DVR Package including: 4 X security cameras, 1 X 4 channel power supply, 4 X video power extension cables and 4 X bonus security warning Decals