Type:AIG-2 Measurement method:NDIR Power:supply8～27VDC Detecting range:0～5%vol Resolution:0.01% Display:3 digital display Max Error For range :0～1%CH4，≤±0.1%For range: 1～5%CH4，≤±10% Warm-up:30sT90 Response time: T90<25s Zero Repeatability±1%FS（20℃） Sensitivity Repeatability:0～5% vol：0.1%（20℃） Drift:1%/month Working Temperature:-20℃～55℃ Storage temperature:-40℃～85℃ Output signals:RS485 , 2-way TTL Analog：4～20ma Safety class:Exd Life span>5year