【Effective Rodent Repeller】This high scanning frequency ultrasonic mosquito repellent can emit 20-100kHz ultrasonic waves, which can not only repel mosquitoes, but also repel various insects: cockroaches, ants , moths, mice, etc. 【Large Area Coverage】This Pest Repeller is effective for an area of 80m² to 160m² and a height of 0.5m to 1.5m. It can be placed in your living room, bedroom, kitchen, bathroom, etc. 【Easy to use】Just plug ultrasonic mosquito directly into the power outlet, if the light is on, it means that the insect repellent works. There is also a smart display screen, you can change the operating frequency according to different needs. 【Safety and No Noise】: Eco-friendly non-toxic and tasteless mosquito repellent, harmless for children and pets, the ultrasonic frequency emitted is inaudible to people and pets, suitable for homes and offices. rats and other pests.