Ultrasound Repellent -This is our advanced version. Using ultrasound theory, change frequency in order to stimulate the hearing system of mosquito and other pests, make them unbearable and feel uncomfortable. > Large Area of Coverage - Each electronic ultrasonic repellent is effective for a large area up to 800-1300ft². Please note that ultrasonic waves cannot pass through walls. While our pest repellent works well, if you have a large infestation we recommend placing our insect repellant in every room. Easy to use - This machine should be installed 80-120 centimeters from the ground. And vertical to the ground and plug into the socket. 24-150HZ. Commonly used in homes, warehouses, shops, hotels, hospitals, offices, etc. Large areas may require more than one unit. Environmentally and Safety-Friendly - The product is non-toxic and environmentally friendly, our repellent is 100% safe and effective, the ultrasonic frequency emitted by this machine is inaudible to humans and animals of
