High sensitivity, low power consumption Good stability and consistency Temperature compensation, excellent linear output Multiple output modes: UART, PWM Long lifespan Anti-water vapor interference, anti-poisoning MH-Z1911A infrared CO2 sensor is intelligent sensor with small size, using non-dispersive infrared (NDIR) principle to detect the concentration of CO2 in the air of buildings such as office, home, classroom, airport installed in air quality meters, air purifier and HVAC system. It has excellent selectivity carbon dioxide, built-in temperature compensation for high accuracy, lower power consumption and optional output ways of UART and PWM. It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design. Application: HVAC system Air purifier Air quality monitor Consumer CO2 meter Smart home device Smart building automation Indoor environmental control Type: Terminal Color: As Shown Material: ABS Package Contents: 1 x Carbon dioxide sensor module