1、According to the principle of ultrasonic, it interferes with the rat's brain nerves, causing a strong reflect response of the rat's central nervous system and auditory system, making it intolerable, panicking, and fleeing the scene. 2、Suitable for use in homes, restaurants, supermarkets, warehouses, kindergartens, office buildings and other places where drugs are not suitable for killing mice. 3、It can effectively repel mice in an independent space of 50 square meters. Very practical. 4、Plug the product directly into a power outlet 20 cm above the ground (a higher position will make the product more effective and the effect of repelling rats will be better), select the appropriate gear, and when the indicator light is on, it means normal operation. 5、Put one in one room as ultrasonic can not penetrate through wall and solid objects. Condition: 100% brand new Item type: Household Mouse Expeller Material: plastic Color: white Size: Approx. 8x8cm/3.1x3.1in Weight: Approx. 91g Suitable type: rodent repellent Product function: electronic mouse repellent used to repel mice Whole machine power consumption: 1.9W Alternating frequency range: 32k-62kHz Ultrasonic sound pressure: 103dB 1 x Mouse Expeller 1 x English instruction