Its functions include automatic detection of fire, automatic positioning of fire origins, automatic extinguishment at fixed points and on-site monitoring. It involves the application of infrared sensoring technology and the fire detecting technology of dual-band images, which are cutting-edge in China. It makes use of a three-level alarming strategy and has achieved extremely high accuracy and reliability. Within 60 seconds after a fire occurs, the positioning of the fire point can be accomplished and the water spray begins. The large liquid flow can rapidly put the fire under control.