Product name: New Ultrasonic Mosquito Killer Material: ABS flame retardant material; Outer packing: Blister pack size: 90*56*50(mm) Color: Ivory product weight: About 100g Working Speed: 5W supply voltage: AC180V-250V /50HZ AC90v-110V/60HZ Output frequency: Electromagnetic wave 20KHz-45KHz Frequency range: 0.8Hz-8Hz Operating area: 80-120 square meters Scope of application: It can be used normally in various environments. It adopts ultrasonic and electromagnetic double chips to work at the same time, confuse the auditory and nervous systems of pests, and expel pests quickly and effectively. It fights against most flying and crawling pests such as mosquitoes, spiders, bedbugs, cockroaches, mice, fleas, ants, fruit flies, etc. 100% SAFE FOR HUMANS AND PETS - Ultrasonic repellents are based on physical methods to completely destroy pests. It continuously emits ultrasonic waves which make pests feel uncomfortable and flee the house. Compared with traditional insecticides, ultrasonic repellents are non-toxic, odorless, harmless to humans and pets (except pets such as hamsters), and have higher safety. Wide effective coverage - The ultrasonic insect repellent can work in tight spaces up to 1100 square feet. Widely used in homes, warehouses, offices, gardens, hotels, etc. Ultrasound cannot penetrate walls and solids. It is recommended to place this repellent vertically 20-80 cm from the ground. Equipping each room with insect repellent yields the best results. Easy to use, plug and play - just plug the electronic pest control system into a wall outlet, no tools required. Make sure there are no obstructions, such as curtains or cabinets covered in mosquito repellent. It is recommended to crawl 10-30 inches off the ground and remove 31-47 inches of flying insects. Most customers will see results within 2-3 weeks Then we can say goodbye to pests Safety Precautions - Do not use this latest repellent outdoors , in hot or humid environments, and keep children and pets away. Typical effects may take 3-4 weeks, depending on the number of infections.