Improved pest control technology: adopts safe and advanced effective technology to disturb and irritate the nervous system of pests. This is more powerful, which makes pests and rodents more difficult to immune than before. Then we can say goodbye to pests and mice Easy to use: simply plug the pest control into the socket. Make sure you install it vertically at a distance of 7 to 32 inches from the floor. Make sure there are no barriers such as curtains or cabinets in front of the repellent. More safe for children and pets: Unlike the traditional repellent, this electronic pest repellent is more environmentally friendly without harmful chemicals, but uses ultrasonic waves (22-65 kHz) to repel pests and insects without killing them. . It is cheaper and more durable than these expensive pest control agents and other pest control methods. Wide coverage: the insect and rodent protection works indoors with up to 1600 square metres. We recommend installing one for each room, as the ultrasonic cannot penetrate walls and solid objects. Additional units are required for large storage areas with heavy pest infestation. Working principle: plug in the power supply, the indicator light will turn red. And there are two modes. The first mode is silent frequency conversion, which is mainly used for mosquito repellents, drives, flies etc. When the first mode is activated, the night light lights up blue. The second mode, which has a slight sound, is mainly used for squirrels, and the colour of the night light changes to emerald green.