Feature: 1.Electronic insect repeller is a type of high-tech electronic product, which uses sweep frequency high-frequency ultrasonic circuit to generate sweeping ultrasonic waves of 20~55KHZ. 2.Scientific research has found that mosquitoes, cockroaches, mice, mites and other pests in the range of sound waves of this frequency, their endocrine system and physiological functions will produce flocculation, thus playing a driving role, ultrasound is no effect on the human body and other animals Harmful, because more than 20KHZ sound waves can not be heard. 3.Safe,non-toxic,tasteless,and efficient,and has been widely used. 4.Widely used in homes, warehouses,shops,hotels,hospitals,offices,computer rooms,gardens,hotel grain stores,etc. 5.Product effective range: 60-80 square meters. Specifications Product name: Intelligent insect repellent Product weight: 40g Rated voltage: AC 85~240V Product Material: ABS Material Rated power: 5W~6W Scope of application: 60-80 square meters Rated Frequency: 50-60HZ Usage: socket type Specifications: This machine should be installed at 60-80 centimeter away from the floor. and should be vertical to the floor and plug to the power socket The installing point should be avoided from carpet, curtain etc attaching sound material. or else, the decrease of the sound pressure will do harm on the helminthes effect. This machine can be plug directly to AC 85~240Vpower socket. Caution: moisture proof, waterproof Don't clean the machine by strong impregnant, water or damp cloth. Use dry and soft cloth with some neuter wash to clean the machine Don't drop the machine and make strong striking on it. Using environment temperature:0-40Centigrade. No-foxic, environment-friendly Save and harmless Package Included: 5pcs * (rodenticide)