They save by ensuring lights and fans not to be left on. Power-saving by ensuring lights and fans are not left on. This microwave motion sensor reflects the latest development in interior lighting technology and provides close to zero wastage in terms of lights being on unnecessarily. Commonly used to control lighting and extract ventilation. The savings be high with a short saving investment payback time if connected to average level lighting such as fluorescent tubes, or compact fluorescent lamps. Higher savings if controlling or lighting., Weight: 0.26786164833 Pounds, Manufacturer: HuddleGlow