ADVANCED TECHNOLOGY -- 2 modes you can choose through the wall switch control. Use as mosquito zapper only, or a light bulb with zapper. Say Goodbye to painful bites! ELECTROSTATIC CAPTURE -- The mosquitoes are attracted by the light-wave technique, get trapped in 360 degrees and killed by the low voltage curren, effectively preventing being disturbed by mosquitoes. SAFE GUARANTEE -- No harm to your health. No need to spray chemical mosquito repellent and other liquids release. Safe for human health and environment. WIDE APPLICATION -- Apply to E26/E27 lamp base and used for anywhere whether in indoor and outdoor use. It will get better effect on a closed space. BUY IT WITH CONFIDENCE -- The 15W E26/E27 bug zapper bulb provides about 50000 hours working life. We provide 12-Month hassle free warranty, if you are not satisfied with it, please contact with us. We will help you solve it at the very first time.