【New Chip Technology】 The ultrasonic insect repellent incorporates a latest generation chip that emits powerful ultrasonic waves to effectively destroy the auditory and nervous systems of pests such as mice, spiders, flies, cockroaches, ants and mosquitoes, among others, making them uncomfortable and making them flee gradually. 【Easy to Use】 The ultrasonic mosquito repellent consumes little energy. It does not need batteries, just plug it vertically into a power outlet. It is recommended to install it at a height between 75 and 114 cm from the ground. The blue LED lights up to indicate that the device is working. 【Effective Coverage】 The insect repellent is effective in areas less than 1200 square meters. Suitable for offices, apartments, supermarkets, warehouses, hotels and other places. However, since walls and solid objects can weaken the effect of ultrasonic waves, we recommend having at least one insect repellent in each room. 【Safe and Eco-Friendly】 The ultrasonic mouse