Description 1. Scope of application: It can be used normally in a variety of environments. The ultrasonic and electromagnetic dual chips work at the same time to confuse the auditory and nervous systems of the pests, and quickly and effectively expel the pests. It fights against most flying and crawling pests such as mosquitoes, spiders, bed bugs, cockroaches, mice, fleas, ants, fruit flies, etc. 2. Safe for humans and pets - Ultrasonic mosquito repellent is based on physical methods to completely eliminate pests. It constantly emits ultrasonic waves that make the pests uncomfortable and flee the house. Compared with traditional pesticides, ultrasonic repellents are non-toxic, odorless, harmless to people and pets (except pets such as hamsters), and are safer. 3. Wide Effective Coverage - Ultrasonic insect repellent can work in tight spaces up to 1,100 square feet. Widely used in homes, warehouses, offices, gardens, hotels, etc. Ultrasound cannot penetrate walls and solids. It is recommended to place this repellant vertically 20-80 cm above the ground. Equipping every room with insect repellent provides the best results. 4. Easy to use, plug and play - you just plug the electronic pest control system into the wall socket, no tools required. Make sure there are no obstructions, such as curtains or cabinets covered with mosquito repellent. It is recommended to crawl 10-30 inches from the ground and remove 31-47 inches of flying insects. Most clients will see results within 2-3 weeks and 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. Product name: New ultrasonic mosquito repellent Material: ABS fireproof material; Outer packaging: Blister packaging Working speed: 5W Power supply voltage: AC180V-250V/50HZ AC90v-110V/60HZ Output frequency: 20KHz-45KHz Electromagnetic wave frequency range: 0.8Hz- 8Hz Effective area: 80-120 square meters Quantity: 2 pieces Size: 90*56*50(mm) Color: Ivory, Product Weight: Approx. 100g Note: This product is European standard, please choose according to your own socket model