Description: <br>MH-Z14A CO2 gas sensor is a general intelligent small sensor, using the non-dispersive infrared (NDIR) principle to detect carbon dioxide in air, and has a good selectivity and no oxygen dependence, long service life.It has built-in temperature compensation, as well as digital output, analog output and PWM output, convenient to use.This is a high-performance sensor combined with infrared absorption gas detecting technology, precision optical path design, excellent circuit design. <br> <br> <br>Features: <br>Gas chamber adopts gold plating processing, waterproof and anti-corrosion, long service life. <br>High sensitivity, low power consumption, excellent stability, resistant to moisture. <br>Temperature compensation, remarkable linear output(the more CO2, the higher voltage). <br>It provides a serial port (UART), analog (DAC) and PWM waveform output. <br>Widely used for heating and refrigeration equipment, air purification equipment, air quality monitoring equipment, fresh air system at smart home and school. <br> <br> <br>Specifications: <br>Working Voltage: DC4-6V <br>Working Current: 50mA (average); 100mA(peak) <br>Detection Range: 0-5000ppm <br>Accuracy: ±50ppm <br>Preheat Time: 180S <br>Analog Output Voltage: 0.4-2V (linear output) <br>Digital Output: Serial data output (9600, N, 8, 1) <br>Response Time: ≤30S <br>Operating Temperature: 0~60℃ <br>Operating Humidity: 0~90%RH <br>Storage Temperature: -20~60℃ <br>Size: 5.7*3.5*1.5cm/2.24*1.38*0.59in <br> <br> <br>Package Includes: <br>1 x Carbon Dioxide Sensor <br>1 x Cable<br>1、Gas chamber adopts gold plating processing, waterproof and anti-corrosion, long service life <br>2、High sensitivity, low power consumption, excellent stability, resistant to moisture <br>3、Temperature compensation, remarkable linear output <br>4、It provides a serial port (UART), analog (DAC) and PWM waveform output <br>5、Widely used for heating and refrigeration equipment, air purification equipment, air quality monitoring equipment, fresh air system at smart home and school