This electric pest control device uses the high frequency sound to exile the pest in your home. You can use this sonic insect repeller to exile insects, mouse, and other pests. The household pest repeller is efficient and practical, the high frequency sound wont easily cause any harm to human. The sonic pest repeller is suitable for many places, such as homes, warehouses, shops, hotels, offices, computer rooms, etc. The pest repeller can be used in space within 80 square meters and is small, compact, convenient to carry or store. Specification: Material: ABS. Voltage: AC 90V-250V. Frequency: 50-60Hz. Power: 5-6W. Working range: within 80 Square Meters. Frequency: 22-65KHz. Operating Temperature: 0-40u00A1u00E3C/32-104u00A1u00E3F. How to Use: 1. The repeller should be installed at 31-47 inches away from the floor. Simply connect it to an AC 240V (or 100V) power socket.The red LED light will illuminate, which indicates the device is working. This repeller should be used indoors only. 2. The repeller covers up to 1200 square feet of space. To enhance the performance, please use more than one device in large rooms.3. In the first few days of using the repeller, it is normal to see even more pests appear in your home. Do not panic. They are just trying to move out of your home. 4. In order to guarantee the best effect of the device, install the repeller away from sound-absorbing materials such as carpets, floor mats, and curtains as far as possible. 5. Do not maintain the device with a wet cloth. If necessary, use a dry and soft cloth to maintain. 6. Do not drop the device or strike it too hard. 7. Suggested room temperature to use the device is 0-40u00A1u00E3C/32-104u00A1u00E3F.Note. There might be a bit color distortions due to different computer resolutions. There might be a slight errors due to different hand measurement. Package included: 6pcs x Pest repeller.