Carbon Monoxide detector 1-Electrochemical co alarm 2-EN50291 co alarm 3 ... Current:≤50uA3.Alarm Density: 30ppm,Alarms Not Activate Within 120minutes 50ppm, Alarms Within 60~90 minutes 100ppm, Alarms Within 10~40 minutes 300ppm ... , Alarms Within 3 minutes4.Alarm Current: ≤30mA5.Sensor: Electrochemistry Carbon Monoxide Sensor6.Superbright LED Display7 ...