This is the 338th most frequent Japanese word.
設置
"設置" means "installation" or "establishment."
In this sentence, '設置' is used to describe the physical act of installing a new object, such as an appliance.
新しいエアコンを設置しました。
A new air conditioner was installed.
In this example, '設置' indicates the intentional placement of devices for monitoring purposes.
多くの監視カメラが主要交差点に設置されています。
Many surveillance cameras have been installed at major intersections.
Here, '設置' is used to refer to the establishment or setup of a system or platform.