The YY-MSGA-CO2 Commercial Carbon Dioxide (CO2) sensor is a single channel,non-dispersive infrared (NDIR) sensor.Within the YY-MSGA-CO2 is a sensing chamber with an infrared source at one end and a detector fitted with an optical filter at the other end.The inner wall of the sensing chamber treated with a special process can effectively improve the efficiency of light emission, use the principle of mirror reflection to effectively increase the optical path, and improve the sensitivity and accuracy of the sensor. The source emits radiation at wavelengths which include the absorption band of CO2.The filter blocks wavelengths which are not sensitive to the presence of CO2, thereby increasing selectivity and sensitivity.As the light passes through the sensing chamber, a fraction is absorbed if CO2 is present. The thermopile detector integrates a 1000 times amplifier (AFE). AFE has a good noise suppression function, which can effectivel

eatability >97% Operating voltage 4.5 V to 5.0V unprotected against surges and reverse connection Power consumption 300 mA peak@5V, 45mA average@5V Alarm output, open collector 1000 ppm/800 ppm normal state is conducting max 100 mA. Transistor open at CO2 high or at sensor failure Serial communication UART, Modbus protocol Operating temperature range 0 ℃to 50℃ Storage temperature range -30℃ to 70℃ Operating humidity 0%RH to 85%RH non-condensed Maintenance maintenance-free for normal indoor applications Weight <7 g Dimensions 33 mm x 22 mm X 11.5mm (tolerance ±0.5mm