This 4-piece rodent repellent set offers numerous advantages compared to other models on the market. With a wide frequency range of 22KHz-85KHz, it can effectively cover an area of up to 150 square metres and is therefore a cost-effective and reliable solution for pest control.It has three individually adjustable modes, including high frequency, low frequency and mixing frequency as well as a test mode. The higher performance improves insect and mice repellency, and the combination of rich modes and 4-piece sets basically covers 99% of your usage scenarios.The 4-piece rodent repellent set is an advantage compared to single or two parts on the market. By covering a larger area with the four devices, greater effectiveness is achieved. In addition, you can place the devices in different rooms to focus the effect on specific areas. The kit offers better value for money and is a reliable solution for pest control.This mosquito repellent uses advanced ultrasonic and electromagnetic waves to control pests through walls. It is compact, easy to transport and suitable for use in classrooms, apartments, offices, factories and rural areas. To keep life effectively and permanently peaceful, you should use this rodent and insect repellent set continuously for more than two weeks.This high-quality mosquito repellent offers you extremely effective protection and a reliable, durable solution. It is carefully tested for power loss and stable operation to ensure the highest quality. Ideal for use in different regions to protect you from annoying mosquitoes.