Description: Type:Repellents Material: ABS Size:9*5*5cm/3.5*1.9*1.9inch Voltage:AC90-220(V) Power:5W Package List:1pc Repellents Feature: 1.Sweep frequency ultrasonic 20-65KHz, scientific research found that mosquitoes, cockroaches, sonic range Lang rats and other pests in the frequency, the endocrine system and their physiological function will cause disorder, in order to play and kill off effect; 2.Due to safety and environmental protection, non-toxic, odorless and tasteless, so a wide range of applications, low power consumption, the total power is less than 2W, and equipped with advance dop to electronic technology. 3.The product can be effective in the room of 50-80 square meters. / the best effect is 50 square meters. It is recommended to install one room in each room. 4.This product is widely used in family, warehouse, hospital, office, machine room, garden, store and hotel, hotel grain depot and so on. Our pest control ultrasonic that sent out from this machine is far away from hearing range of human being. 5.They will not do harm to human being and pets. Also will not have affect on house machine. 6.Works for Rats, Mice, Ants, Roaches, Spiders, Bugs, Fleas, Bats and much more. Notes: 1.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2.Please allow 1-3cm measuring deviation due to manual measurement