fenestra is a zero net energy device. Power is provided via a small solar panel which can be placed directly on your window.
Simple to install and simple to remove
fenestra is secured at the base of your horizontal sliding window using a high technology 3M® adhesive but do not worry, it can be removed at any time and leaves no trace behind.
Peace of mind when opening your windows
Armed with a motion sensor, a siren alarm and mobile notifications, fenestra can react and close your windows in an instant. During the night or when you are not home, fenestra can open your windows just an inch to only let air in while keeping you and your family safe.
Our current prototype