A bedroom window that detects predetermined levels of carbon monoxide and automatically open by itself to save the occupants lives without any external electrical supply, replaceable alkaline batteries or any human action; this lifesaver window is self-contained, pre-assembled, solar-powered, environmentally friendly and able to open the window sash by itself to allow the CO to escape, to reduce CO concentration, to let the outside clean air to enter the room, to sound it's alarm, and to trigger the Fire & Police Private Central Station Alarm; it can be installed as new or as a replacement window in homes, hotels, hospitals, dormers or wherever humans or animals live; can be manufactured in different sizes and styles to accommodate any architectural design and furthermore it installation requires the same skills & tools needed to install a regular window without the need of other trades.