Personal portable (Telemetry can be measured using an optional cable) Sulfur dioxide 0 to 50 ppm Diffusion type Target gas: Sulfur dioxide Measurement range (ppm): 0 to 50 Dimensions (mm): 105 (W) x 56 (H) x 29 (D) Alarm concentration (ppm):2,15 警报方法:LCD显示器,灯,蜂鸣器,振动 电源(V):2 AA碱性电池 连续使用时间(H):600小时(使用碱电池时)