The product adopts the latest microelectronic technology that can produce extremely low frequency electromagnetic wave and high-frequency wave intermittent alternately, which can deter unwelcome pests, like mouse. The wave makes the pests feel uncomfortable and the nightlight makes the them be scared, so the pests will flee away. Features: Advanced: generate electromagnetic wave and high-frequency wave at the same time. Frequency: change constantly and intermittently, but not periodically. Adjustable wave band: 1 band(25-70KHz) and 2 band(10-70KHz) for different situations. Comfortable: with nightlight function, soft blue light can also boost the repelling effects. Safe: use physical method, non-toxic, no harm to human beings or pets. Powerful: the effective protection range is about 200 square meters under open environment. Suitable for using in household, office, supermarket, hotel or storehouse, repelling pests effectively. Specifications: Color: White Material: ABS Voltage: AC 110-230V Plug Type: US / EU(Optional) Power: ≤6W Electromagnetic Wave Frequency: 0.8Hz-8Hz Wave Frequency: 1 Band: 25-70KHz; 2 Band: 10-70KHz Protection Range: About 200 square meters under open environment Item Size: 90 * 60 * 33mm / 3.54 * 2.36 * 1.3in Item Weight: 83g / 2.93oz Package Size: 12.5 * 9.5 * 7.2cm / 4.92 * 3.74 * 2.83in Package Weight: 136g / 4.8oz Note: 1. This product cannot be used in these countries like Norway, Poland, Austria, Spain and France. 2. Please choose 1 band High-frequency Wave if you raise pets at home, because 12-20KHz high-frequency wave would have some effects on pets. 3. It's normal reaction when you find the mouse more active for first use. After using for 2 weeks, you can see obvious effect. Package List: 1 * Electronic Pests Repeller 1 * User Manual(English)