This is a absolute new product. It can help sufferers of allergies, colds, sore throats and asthma because the negative ions will remove dust, pollen, smoke, pet dander, bacteria, mold spores, smog and dead skin from the air in your home. The unit works at 24V Low voltage, safety and no harm to human being & animals absolutely. Quiet treatments DC adapter DC 12V 650mA 2.4MHz Lung health care Suitable for all ages