Electric opening drives relieve you of the opening and closing of windows. Especially when mechanical ventilation requires too much manual force or is not possible at all. Opening drives for windows offer both: Safety in case of danger and ventilation comfort in everyday life. Automated windows with chain or spindle drives serve as a smoke and heat extraction opening in case of fire. As a side effect, they serve the purpose of providing controlled daily ventilation and take on the function of a window ventilation system.