LOFTER Ultrasonic Electromagnetic Pest Repellent Repels Mice, Rats, Cockroaches, Spiders, Mosquitoes & Other Insects with Dual Wave Brands and Blue Night Light for Home Pest Control (White) Powerful and Variable Dual Wave Bands: High frequency electromagnetic wave and ultrasonic wave for repelling mice and pests more effectively. And the frequency is changing intermittently and constantly, thus the mice and insects will not become adaptive and immune to a certain fixed-frequency. 2 Different Band Level: Offer 2 different band level according to your different usage. First Band is 25-70KHZ (Default), suitable for repelling mosquitoes, flea, acarid, bug, etc. Second Band is 10-70KHZ,suitable for repelling rats,wild animal,etc. (Second Band will offer a very strong and powerful frequency, it will make people or pets feel uncomfortable, so they only can use where is no people or pets) Safety and Easy to Use: It is designed and produced in accordance with related international quality standards and all the elements comply with requirements of relevant standards. You only need to plug it into the socket and then it will start working, you can select the band easily by press the SWITCH button. Place 1pc at each room, would be more effective to drive away unwanted pests. Soft Blue Night Light: Comes with the Blue LED Night Light, can indicate where the pest repeller is and you will never blind in the dark night. Easy to turn on/off the light by press the SWITCH button. Best After-sale Service: 30-Days Money Back Guarantee, 12-Month Replacement Warranty and Lifetime Support Guarantee. Ready to reply your message within 24 hours,welcome to contact us if you have question.