Rid your outdoor living areas of flying insect pests - without harming the environment! Long wave UV light and powerful electrified grid that can kill flying pets Theory: Attracts flying insects by emitting high-intensity long wave UV light. Making flying insects such as flies, mosquitos unable to resist approaching, then getting them immediately trapped and killed via the high-voltage charging metal grid. Features: With lighting sensor to control Killing grid powered by high voltage transformer Save and energy saving How to test electric mosquito killer lamp? If you test fly zapper during the day, here is the suggestion to test. A. After receiving the product, check and make sure that the original state of the button switch is to bounce. B. Then plug the product into the power, the product is working and the light is on. C. Press the switch button first time, the light off, the product works. Meantime, the product is on the light control mode. D. Place an opaque piece of paper 5cm away from the product and aim the paper at the Light Sensor position of the product, wait for 1-2 second, the LED light of flies killer is on. SPECIFICATIIONS: Input Voltage: AC100V-240V Frequency: 50/60Hz Power: 0.8W LED color: emitting high-intensity long wave UV light LED quantity: 4pcs Wavelength: 390-400mm Button Control: lighting control / constant light PACKAGE: 1 x Brush 1 x Plug-in Bug Zapper Warning: 1.No washing by water; No touching the lamp until it cools down 2.It is not a toy, Keep children or pets away from touching 3.Unplug the mosquito killer for a while before cleaning,then use a brush to clean the metal grid.