Try not to place the cameras near sources of heat or under the sun.It is best placed high on the wall or nearer to the roof (to avoid all kinds of obstacles like furniture, cubicles, etc.) Once again, do not place the wireless IP Cameras at a low level.Especially if the same SSID is used on both.
However, materials such as brick, plaster, cement, metal, stone, and double-glazed glass may cause problems. Materials such as drywall, plywood, other kinds of wood and glass can be easily penetrated by wireless signals. However, in reality, some walls are thicker or use reinforced concrete and may block some of the signals. In theory, Wi-Fi signals are capable of passing through walls and other obstacles relatively easily. The first thing to do is to check the construction of the walls. It is very important to be aware of these impediments and see how they could affect the installation, before going in for a wireless solution. While installing Wi-fi solutions, a user may come up with a few impediments specifically w.r.t the range and reception.