When people pass by the Home Security Camera Surveillance System/CCTV Security System, it will be detected by the system and show on the monitor, at the same time, the system will remind you. Fetures: 1) Used as monitor and with auto-channel scan function 2) Picture tube: 5.7" B/W CRT 3) Resolution: 380 TV lines 4) Channel: 2 A/V input and 1 A/V output 5) Camera: 1/4' ' B/W CMOS sensor, 100000 pixels, 3.6mm Lens, 0.5Lux Min. Illumination, with IR LED lights 6) Camera with PIR sensor 7) Power supply: DC 12 V (for monitor); DC 9V (for camera) 8) Power consumption: < 10.5W 9) Each package contains: monitor, one AC / DC adapter, manual, 2 cameras (other one optional) Carton size: 74.9 x 33 x 37.8cm / 4sets Qty/20' FCL: 1,860pcs Qty/40' FCL: 3,852pcs Qty/40' HQ: 4,320pcs