Window opener stroke or angle

Journey or angle
Opening stroke: The required opening angle is converted into the straight-line distance of the window (according to the cosine theorem), and only for daily ventilation, the opening angle should generally not exceed 30 degrees (the opening angle depends on the height of the window). The window stroke at a height of less than 1 meter is generally 300-400mm. However, there are fire safety requirements, and when the fire signal is linked, the maximum angle for opening the window is generally 70 degrees.
Push pull force
Generally between 200N and 1000N, the simple calculation of push-pull force is F=1/2 (self weight of the window sash) * (maximum opening stroke/window height). The force of the smallest window opener (window opener) is 200N, which is generally used for flat windows with less force.
power supply
The power supply for the window opener includes AC220V, DC24V, etc. Generally, the smart home system is connected using a power supply of AC220V; Generally, metal curtain walls or metal windows use a safe voltage DC24V power supply. When there are fire safety requirements, a DC24V power supply must be used; And communication facilities use DC48V.