Ultrasonic Pest Repeller Reject Control Electronic Repellent Mouse Rodent Cockroach Insect Killer_x000D_ _x000D_ It/'s hot summer time now. Cockroaches, mosquitoes, mice or something like that can be seen almost everywhere. They are disgusting, unsanitary, especially for children. Because mosquitoes transmit malaria, and rats may carry the virus and cockroaches spread bacteria. They are dangerous sometimes! For the sake of you and your family/'s health, you need this Ultrasonic Electronic Pest Repeller, and create a clean and healthy living environment for them. The greatest love always lies in the details._x000D_ _x000D_ Key Features:_x000D_ - It is applicable to repel cockroach, mosquito, insect, pest, mice etc. _x000D_ - The repelling ultrasonic frequency is 22 - 65KHz and the effective range is 80 - 120sqm_x000D_ - Non-toxic and environment-friendly_x000D_ - Safe and odorless_x000D_ - With ABS shell, durable and shock resistant_x000D_ - Power source: AC 90V - 250V, 50 - 60Hz_x000D_ _x000D_ Installation Method:_x000D_ 1. Install it on the power socket of the wall in the height of 20 - 80cm, ensuring vertical to the ground ( strictly forbid keep flat on the ground ). If there is no power socket of the same height in your home, and you need an external patch board to keep the product in the same height_x000D_ 2. Not allow tall barrier lying in the front of the product within 1 meter_x000D_ 3. The product needs to toward the open area, but you do not allow to choose the long-time open doors and windows ( or it will weaken ultrasonic intensity, decreasing the efficiency of rodent repellant )_x000D_ 4. Try to avoid directly facing the curtain, fabric sofa, etc. and other fabric items ( because the fabric items can absorb ultrasonic wave )_x000D_ 5. First, you need to install the product in the most severe area of rat damage, and after the mice are destroyed, transfer it in the center of the whole house ( such as living room ) or the mouse will easy to enter in_x000D_ Types: Mosquito Repellent Bracelets _x000D_ Functions: Others _x000D_ Material: ABS _x000D_ _x000D_ Plug Type:US Plug,EU Plug_x000D_ _x000D_ Package Contents: 1 x Ultrasonic Pest Repeller