Description Material: ABS.Power Supply: AC 90V~250V, 50-60Hz.Rated Power: 3W.Effective Range: 800~1200 square feet.Operating Temperature: 0~40/32~104.Plug Type: US/EU/UK/AU Plug.Size: About 87.8x55.5x29.8mm/3.46x2.19x1.17Upgraded chips technology, the pest control ultrasonic repeller uses newest ultrasonic and electromagnetic waves to disorientate the hearing and nervous system of pests to quickly and powerfully drive away rodents, roaches, spiders, mosquitoes, bed bugs, ants etc.Easy to use, just plug into a socket, make sure the ultrasonic pest repellent at least 80cm in away from the floor. It could take 3-4 weeks to go into effect.Large coverage area, the ultrasonic pest reject is effective for an area up to 800~1200 square feet.Safe and eco-friendly, humans and pets cant hear the ultrasound and electromagnetic waves emitted by the repeller. It does not produce any harmful poisons and dangerous chemicals, safer than traditional mosquito repellents.Attentions:1. Please allow tiny size deviations due to human measurement.2. Please note that there should be no barriers such as curtains or cabinets in front of the ultrasonic repeller.3. Ultrasonic waves cant travel through walls. Though the pest defenders work very well, we recommend placing one in each room.