New industrial combustible gas detector, independent work can be directly connected to AC220V power supply work. The product is a flameproof detector, which meets the requirements of the new national standard and can work in the industrial occasions with explosion-proof requirements. With 2.1 inch digital tube data concentration, status display, can present real-time detection results. The integrated sound and light alarm design is adopted to avoid the user's second connection with the sound and light alarm.