Features: 1. Powerful Function : Produce electromagnetic wave, ultrasonic wave, simulation wave at the same time. 2. Variable Frequency : The frequency of the ultrasound wave and electromagnetic wave produced by the product is changing intermittently and constantly. Thus the mice and insects will not become adaptive or immune to a certain fixed-frequency. 3. Selective Frequency : 2 ultrasonic working bands can be chosen in accordance with different usage scenarios. 4. Easy to Use : Just simply plug the device into your indoor electrical socket and watch your home become completely free of all pests, rodents and insects. 5. Safe to Use : No harm for children, pets and your family-no messy chemicals or pesticides, no traps and completely silent for human and home pets. 6. Effective in 3 - 4 Weeks : It will take 3 - 4 weeks for the best results as rodents and insects will find the ultrasonic waves disturbing at first and then modify their behavior to avoid the area. 7. LED Indicator : The LED indicator shows the working mode. Notice: Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. Description: Power supply: AC 110 - 230V, 50Hz Average power consumption: less than or equal to 6W Electromagnetic wave frequency: 0.8 - 8Hz Ultrasonic frequency: 1 band: 25 - 70KHz, 2 band: 10 - 70KHz Using range: 200 square meters in open environment Feature: Battery-Free,LED Night Light Power (W): Less than or equal to 6W Voltage (V): 110 - 230 Connector Type: EU plug,US plugUK plug Product size (L x W x H): 8.50 x 5.80 x 5.30 cm / 3.35 x 2.28 x 2.09 inches includes: 1 x Mosquito Repeller 1 x English User Manual