Effectively deters mice, rats, and other rodents. Fully safe for humans. The repeller emits unpleasant ultrasonic signals for rodents with variable frequency (inaudible to humans, dogs, and cats). These signals affect the nervous system of rodents. They evoke fear, anxiety, and disorientation in the field. After a few days, the pests leave the protected area. It has a built-in lamp that repels some pests at night. It can be turned on or off using a button located on the cover. Specifications: - efficiency in rooms up to 185 m2 - device powered by a power outlet - operation of the repeller indicated by a green diode dimensions: 10 x 6 x 6.5 cm