Electronic vibrawave technology. Reaches deep into walls and cracks. The exclusive high pressure transducer emits an ultrasonic alarm that drives pests out by creating a hostile environment. The optional blue led light illuminates the room with a soft pleasing glow. No insecticides. No traps. No poisons. The ionic air purification pumps out the beneficial ions that clean the air of the pollutants. Covers up to 465 square metres.