Portable Riot control oxygen gas analyzer O2 AS8901 concentration content measuring instrument detector tester

Portable Riot control oxygen gas analyzer O2 AS8901 concentration content measuring instrument detector tester   Item: oxygen    Analyzer Model:AS8901Brand:Smart SensorMeasuring Range:0-25% Gas Detection:oxygen Accuracy:   <±0.1% Response time:<50S Recovery time:   <50   S preheating time:About 18sWorking temperature:-10-40°c Working Humidity:0-95% RH   Fundamentals of Sensors  Electrochemical principle Warning:Sound/light/vibration Battery:3.7V rechargeable batteryProduct size:120*64.5*37MMNet weight:198g