Features :

• Fine tuned the range of ultrasonic frequencies
• Three function modes, green, blue and red, green and blue is inaudible, red is audible
• It can cover an area of 80 to 120 square meters
• Put one in one room as ultrasonic wave can not penetrate through walls and solid objects
• Working with low frequency ultrasonic wave

Product Description :

There are 3 operation modes,different light colors show different functions, green light is used for slight pest infection, human can not hear, blue light is used for middle pest infection, human can not hear, red light is used for terrible pest infection, human can hear, do not turn on red when human are inside the house, as this mode produces noise making human uncomfortable, turning on this mode when human are not in the house