Explosion-proof phone is a waterproof, explosion-proof VoIP phone specially designed for hazardous area communication. The explosion-proof telephone uses heavy metal as the raw material of the outer casing, and its appearance is firm and vandal-proof. It can be used in emergency environments such as petrochemical mining and the like as emergency communication equipment.
Underground transit systems are essential for mobility in urban environments, connecting people to their destinations quickly and efficiently. However, the...