Product description Combustible gas alarm controller wall type combustible gas control digital display type gas controller Technical indicators Installation method: wall hanging Display mode: digital tube display Measuring range: (0 ~ 99)%LEL Alarm setting: high, low limit of two alarm Low limit alarm: 25%LEL (adjustable) High limit alarm: 50%LEL (adjustable) Alarm error: ± 5%LEL Alarm time: ≤ 30s Working temperature: 0 ℃ ~ 40 ℃ Working voltage: AC220V/50Hz The work point count: ≤ 99 Power consumption: (50 ~ 200) W Alarm: alarm Transmission distance: ≤ 1000M Size: 500x350x120mm Weight: 10kg Special point Good working stability, high reliability. Digital tube highlighted. Standard RS - 485 communication interface. With self inspection, self diagnosis function. The main power without gap automatic switch over and under voltage protection. The detector output module, respectively, up to 99, flexible configuration. Automatic inspection Combustible gas alarm controller for more detailed information please call Advisory