Great pest control technology: Adopts safe, advanced and effective technology to disturb and irritate the nervous system of pests. It is very powerful, protecting you from pests and rodents. Then we can say goodbye to pests and mice Easy to use: Simply plug the pest control device into the socket. Make sure you install it vertically at a distance of 18 to 81 cm from the floor. Make sure there are no barriers such as curtains or cupboards in front of the repeller. Safer for children and pets： Unlike the traditional repeller, this electronic pest controller 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 expensive pesticides and other pest control methods. Wide coverage: The insect and rodent protection works indoors over an area of up to 1600 square metres. We recommend installing one in each room as the ultrasound cannot penetrate walls and solid objects. Additional units are required for large storage areas with severe infestations. Working principle: Plug in the power supply, the indicator light will turn red. There are two modes: The first mode is the silent frequency conversion, which is mainly used for repelling mosquitoes, 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.