Features: Made of ABS flame retardant material, high temperature-resistance, no toxic, safe and environmentally friendly. Easy to install and use just plug it into a wall socket without any tools. The ultrasonic insect repellents adopt 3840 large speaker, the ultrasonic volume can reach more than 110, and the driving effect is for stronger. Keep pest out of your home. Effectively destroys, annoys and irritates common household pest such as mouse, insect, spiders, flies and any other nuisance pest in your home. Ultrasonic insect repellents can be used in various places, such as bedrooms, hotels, bathrooms, garages, grain depots, kitchens, offices, warehouses, hospitals, shops, etc. Please note that this repellent is for indoor use only. The Repellent emits ultrasonic-wave beyond the range of human hearing, and the intelligent multi-frequency ultrasonic conversion system makes the pest nowhere to hide. You can enjoy a restful sleep without worrying about noise and pest. Package Includes: 1X Ultrasonic Pest Repellent Specifications: Material: ABS Plug Type: US Standard / British Standard / European Standard Size: Approx. 8x13cm/3.15x5.12inch note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.