<p>The -Z19E carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general- intelligent small sensor. It has two products: pin and terminal. It uses the principle of non-dispersive infrared (NDIR) to detect CO2 in the air and has good selectivity. No oxygen dependence, , etc.</p> <p>The sensor is a high-performance sensor made by closely combining infrared absorption gas detection technology with precise optical circuit design and sophisticated circuit design.</p> <p>High sensitivity, low power consumption</p> <p>Excellent stability</p> <p>Temperature compensation, excellent linear output</p> <p>Provide serial port (UART), PWM waveform and other output methods</p> <p>long lasting</p> <p>Anti-water vapor interference, no poisoning</p> <p>Application:</p> <p>HVAC equipment</p> <p>Air quality monitoring equipment</p> <p> air system</p> <p>Air purification equipment</p> <p>Smart home</p> <p>school</p> <p>Parameters:</p> <p>Product model: -Z19E</p> <p>Detection gas: carbon dioxide</p> <p>Power supply voltage: DC(5.0 +\/- 0.1)V</p> <p>Average current: less than 40mA (@5V power supply)</p> <p> current: 125 mA (@5V power supply)</p> <p>Interface level: 3.3V (compatible with 5V)</p> <p>Measuring range: 400~5000ppm optional</p> <p>Output signal: serial port (UART) (TTL level 3.3V); PWM</p> <p>Warm-up time: 1min</p> <p>Response time: T90 less than 120s</p> <p>Working temperature: -10~50</p> <p>Storage temperature: -20~60</p> <p>Working humidity: 0~95%RH (non-condensing)</p> <p>Type: A: Row Pin</p> <p>Colour: As Shown</p> <p>Material: PC+Metal</p> <p>Package Contents:</p> <p>1 x -Z19E IR Infrared CO2 Sensor Module</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>