Air curtains is not an air conditioners: Air curtain is a powerful fan that forcing a high speed air stream over the entrance to isolate the interior and exterior air environment. It consumes less energy than an air conditioner. Safety: Fireproof/100% anti-rust aluminium alloy and high precise ABS case reduces the possibility ofdamaging. Easy to clean and protect your healthy life. Optimized energy-saving motor: stable operation, continuous operation for 5000 hours without failure, long service life, built-in overheat protection, safer. Two kinds of wind speed can be adjusted: There are two kinds of wind speed can be adjusted for the air curtain machine. You can directly control it through the buttons of the machine. Applicable places: supermarkets, shopping malls, hospitals, hotels, stations/metro stations, restaurants, KTV bars, Internet cafes, airports, factories and other public places.