... 3APower: 18WCoverage: 4000 -- 5000 square meters (360-degree to kill mosquitoes)Principle: Double optical frequency vibration-typeHigh-voltage power ... Advantages: Energy saving——Solar powered, no need to install cables.Safe to human beings and animals——Overall shielding cover; ... sizes, colors, shapes, etc can be specially developed according to application conditions. i.e. gardens, parks, lawns, roads, ...