[Ultrasonic Technology]The Ultrasonic Repellent uses dual ultrasonic and electromagnetic chips technology simultaneously,it can disturb and irritate the nervous system of insects, making them uncomfortable and unpleasant,thus effectively resisting . [-saving & silently ]This device is highly cost-effective and eco-friendly, consuming only 3 - 5W of power. Moreover, it emits ultrasonic waves that cannot be heard by humans, working silently and odorlessly, thus ensuring it 't disrupt your sleep. [Simple to Use]Simply plug the ultrasonic Repeller into any outlet (at least 20 cm above the ground) to it. [Safe & Environmentally Friendly]Electronic Repellent is only used to drive away , does not harm the human body or pets at all. There are NO , chemicals and traps! You don't need to worried theElectronic Repellent is harmful to babies or your pets. [Effective coverage]The upgraded ultrasonic repeller is equipped with a dual-chip system, which can effectively repel in an area of up to 120 square metres. It is perfect for various indoor environments including homes, garages, offices, restaurants, and warehouses. Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.