Frequency Conversion Ultrasonics Mosquitoss Killers With LED Sleeping Light Features: [100% prevention] - using electromagnetic and technology, this drive will defend your property from any pest. of worm will be disturbed and disoriented, leaving your worm behind. [safer] - human and household animals can not hear sounds, can replace dangerous poisons, sprayers, chemicals and traps, no smell and dead bodies. [easy to use, night light] - to install our insect , just plug it into the power socket. [wide coverage, silent operation] - this , so you can set it quietly in children's room, bedroom or guest room. Insect repellers can effectively cover and control up to 800-1200 feet of each device. It is recommended to install one equipment in each room. Please note that Ultrasonics waves cannot pass through solid materials and walls, so do not put furniture or any other items in front of them and keep doors and close to allow the waves to expand and work. [no noise] - the Ultrasonics emitted by this driving device is far the range of human hearing. Enjoy a quiet and pest sleep without worrying about noise, so that your family can have a good sleep form. Product : SPECIFICATIONS: Voltage: 90V~230V Rated frequency: 50/60 HZ Power: 0.6W Material: ABS Package includes: 2*Night light