Carbon Dioxide Sensor Infrared CO2 Concentration Detection 5000ppm Gas HAVC RV Smart Home Air Quality Monitor Item Type: Carbon Dioxide Sensor Material: ABS, metal Measured Gas Type: CO2 Measurement Principle: NDIR Measuring Concentration Range: 400ppm-5000ppm Measurement Interval: 2 Seconds Measurement Accuracy: ± (50ppm +5% of reading) Response Time: 90 Seconds Operating Temperature Range: 0-50℃ Operating Humidity Range: 0-90%RH (non condensing) Storage Temperature Range: -20℃-60℃ Life Span: 10+ Years Communication Interface: Uart/ⅡC PWM Output: Period: 1004ms, Pulse: 2ms-1002ms (0-5000ppm) Alarm Output: Concentration >1000ppm, output 1, concentration <800ppm, output 0, pin is open leakage output mode, non sunction Self Calibration Period: The default self calibration period is 7 days