MP400 can accurately detect several different gas including combustible gas, oxygen, carbon monoxide and hydrogen sulfide at the same time. It can bring friendly and flexible wireless detection experience to the users. MP400 can anticipate potential threats to users and devices. Its continuous detection will facilitate decision makers to response quickly and scientifically. MP400 has two versions: pump-suction and diffusion. It can be widely used in metallurgy, petroleum, petrochemical, chemical, fire protection, telecommunications, municipal, sewage treatment and other industries.