Wattage: 20W Voltage: 220v Frequency: 50Hz The mosquito killer uses two ultraviolet light bulbs to attract flies, moths, mosquitoes and other flying insects. The mesh screen protects you and your family from accidental contact with the power grid. High-pressure metal grilles attract and easily kill insects, protecting your home from chemical sprays. Attach the chain to the hook on the top of the unit or simply place it on a sturdy surface.