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This is manufactory to produce real efficient electric ultrasonic rodents & pests repeller from china, we also provide OEM service, we have the most Professional testing equipment in China, make any pest repeller that you need.

Working Principle: Adopting modern micro-electronic technology, this unit can give out special ultrasonic waves between 25KHz - 65KHz. Through the unique ultrasonic speaker, this unit can act upon the hearing and the nervous system of the mice and rats to make them unpleasant and uncomfortable. So they will leave the transmission area. While the sound is too high for humans.

Usage and Coverage:  

• The unit mainly impacts on mice, rats and other rodent species. Do not keep rodent pets (such as gerbils, hamsters or guinea pigs) in ultrasounds protected area.
• This unit can be used in the following places: Homes and apartments, food services outlets, businesses, museums, libraries, banks, wine-cellars, farm buildings, boats and RV’s, institutions, etc. 

The effective coverage is around 150 square meters which is enough for a room. The effectiveness will be better if more units used or other pest control methods combined with it in the room.