This product is a European plug. Safety and Environmental ProtectionThe ultrasonic mouse repeller is friendly to both humans and pets, and does not require batteries, which can save a lot of money. Besides, the blue night light can provide you with a sense of security, a comfortable sleep and a pest-free environment. No Noise and No OdorThe Pest Repellent Ultrasonic Plug in chemical-free, non-toxic, consumes less power and is inaudible. Rat Repellent Ultrasonic can effectively stimulate the nerves of pests, so that the pests are forced to escape from your home and give you a clean and tidy place. Easy to UseJust plug this mouse deterrent plug in to the outlet and place it perpendicular to the floor. Please make sure to install it vertically 80-120cm from the ground. And make sure there are no obstacles like curtains or cabinets in front of the repellent. Wide coveragePest Repeller indoor effective area up to 1600 square meters. Widely used in homes, warehouses, offices, gardens, hotels and other places. But for areas with severe pests, we recommend installing 2 or more units in other rooms. Please note that it takes 3 or 4 weeks for our rodent repeller plug in to have visible results.