MH-Z19B carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose smart small-scale sensor that uses non-dispersive infrared (NDIR) principle to detect the presence of CO2 in the air, with good selectivity and anaerobic  Gas dependence, long life and other characteristics; built-in temperature compensation; at the same time with serial output, analog output and PWM output, easy to use. The sensor is a high-performance sensor that combines mature infrared absorption gas detection technology with precise optical path design and sophisticated circuit design.

Parameters:

• Product model number: MH-Z19B

• Gas Detection: Carbon Dioxide

• Supply voltage: 4.5~5.5V DC

• Average current: <20mA (@5V power supply)

• Peak current: 150 mA (@5V supply)

• Interface level: 3.3V (5V compatible)

• Measurement range: 0~10000ppm can be selected within the range

• Warm-up time: 3min

• Response time: T90<120s

• Working temperature: 0～50°C

• Operating Humidity: 0 to 95% RH (non-condensing)