1:110v heat gun for the United States, Taiwan and other countries and areas, use 110v voltage 110v voltage is not used, please do not order, lest cause cannot be used, or burn 2:please do not use hot air blow gun directly at the 90 degrees 3:items from heating, hot air gun tuyere advice from 5 - 6 cm 4: heat gun single use time shoulds not be too long, generally for 2-3 minutes, such as feelingBody temperature rise obviously, please close the heat gun, wait for after cooling 5:heat gun temperature can reach 200 ℃ or so, not for desoldering small iron components and SMD integrated circuits and other industrial use