Lofter Effective Smart Electromagnetic Ultrasonic Pest Repellent Repels Mice, Rats, Cockroaches, Spiders, Mosquitoes & Other Insects Durable Home Insect Repellent with Night Light (White+Blue) 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. 6 Different Operating Modes: Using the latest unique intelligent control circuit principle technology, can offer 6 different operating modes according to your different usage. PLEASE NOTE: Mode 5 and Mode 6 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 mode easily by press the MODE button. Place 1pc at each room, would be more effective to drive away unwanted pests. Orange Night Light: Comes with an Orange LED Light in the bottom, which is not visible for mosquitoes, thus it is more effective to repel mosquitoes. Moreover, the Orange LED can be used as a night light, you will never blind in the dark night. Best After-sale Service: Ready to reply your message within 24 hours, will offer a good solution for you when your pest repeller has problem, such as offer a free replacement, refund and so on.