The -Z19E carbon dioxide sensor (hereinafter referred to as the sensor) is a general-purpose 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.The sensor is a high-performance sensor made by closely combining mature infrared absorption detection technology with precise optical circuit design and sophisticated circuit design.High sensitivity, low power consumption stabilityTemperature compensation, linear output serial port (UART), PWM waveform and other output methodslong lastingAnti-water vapor interference, no poisoningApplication:HVAC equipmentAir quality monitoring equipment air systemAir purification equipmentschoolParameters:Product model: -Z19EDetection : carbon dioxidePower supply voltage: DC(5.0 +/- 0.1)VAverage current: less than 40mA (@5V power supply) current: 125 mA (@5V power supply)Interface level: 3.3V (compatible with 5V)Measuring range: 400~5000ppm optionalOutput signal: serial port (UART) (TTL level 3.3V); PWMWarm-up time: 1minResponse time: T90 less than 120sWorking temperature: -10~50Storage temperature: -20~60Working humidity: 0~95%RH (non-condensing)Type: B: terminalColour: As ShownMaterial: PC+MetalPackage Contents:1 x -Z19E IR Infrared CO2 Sensor ModuleOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.