Forced air respirator (FZQZ-I) is safety equipment for the wearer to use in different fields such as industry, , agriculture, medical team and scientific research, military, police and civil defense. It conveys the filtered air from the turbo fan to the wearer.Full load working time: built-in lithium battery charge full :�1.5hInstall an external connection power supply for more than 6hExhalation resistance: �98Pa (30L / min);Air outlet flow: � 170 liters / min;Mask leakage coefficient: � 0.005%;LCD monitor direct observation of electricity: Alarm when the power is less than 10% ± 2%, while the alarm red light flashes.Rechargeable lithium battery inside before leaving factory. Optional installation of external power is available , such as customer requirements according to customer requirements.