[The latest technology is 100% safe]: A new generation of safe and environmentally friendly high-tech products, using the latest dual chips. Eliminate pests more effectively. It is non-toxic, environmentally friendly, does not contain chemical substances, and is safe for people and pets. [Multi-function variable frequency mouse repeller]: This kind of mouse repeller emits ultrasonic waves of different frequencies to stimulate the nervous system of insects and mice, making them feel uncomfortable and gradually escape. [Wide scope of application] Households, warehouses, shops, hotels, hospitals, offices, factories, etc., are for indoor use only. Effective against all pests: spiders, mice, insects, etc. [Large coverage area] Standard wall-mounted British plug, portable and easy to install, plug and play. One room and one machine, the larger the area, the more mouse repellers are needed. The effective coverage area is approximately 800 to 1200 square feet. [Energy-saving] Protect you from pests all day long without worrying about bills. The intelligent night light of this insect repellent creates a warm and comfortable environment for you. Product Specipication Specifications: -Power: 5-6w -Input power: AC 90v-250v -Working temperature: 0-40 -Ultrasonic frequency: 22-65khz Packing list: 4 x ultrasonic insect repellent x instruction manual Note: 1. The insect repellent should be installed 8-31 inches (20-80 cm) from the floor and perpendicular to the floor. 2. The ultrasonic insect repellent should not be placed in front of carpets, curtains, and other cloth furniture. 3. Please note that it takes 3 or 4 weeks for our mosquito repellent to achieve significant results. 4. It is normal that rats and pests will increase in the initial stage of use, because they will stay away from the living place after the ultrasonic attack.