Office area monitoring camera how to choose?
3, and then there is clarity, and optional analog cameras and network high-definition camera, which is higher pixels, the price is relatively expensive
2, according to the size of the monitoring range, you can choose 4 mm, 6 mm, 8 mm and other lenses, these costs are the same, the smaller the number of millimeters, the greater the scope of monitoring, look closer, the greater the number of meters Small but look farther away
1, because the hemispherical can be ceiling on the ceiling, more beautiful
