The main body waterproof design, the airflow can be regulation and step-less regulating airflow, there is a battery energy LCD and electronic warning system will buzz when Li-ion battery energy is low. Multi-helmets are suitable to PRF-103R main body which is suitable in many kinds of dust and gas working environment. Fully charged battery can be used for 6—20 hours continuously.
Airflow: 160—280L/Min. it is unsuitable to anoxic environment (Oxygen content less than 18%) or IDLH concentrate (immediately dangerous to life and healthy).
