MH-Z19 MH-Z19C IR Infrared CO2 Sensor Module Carbon Dioxide Gas Senso

Detailed Information About The Product:

The MH-Z19C carbon dioxide gas sensor hereinafter referred to as the sensor is a general-purpose intelligent small sensor that uses the principle of non-dispersive infrared NDIR to detect the presence of C02 in the air.
Built-in temperature compensation: simultaneously has serial output PWM output easy to use. The sensor is a high-performance sensor made by closely combining mature infrared absorption gas detection technology with sophisticated optical circuit design and sophisticated circuit design.
Detection gas:carbon dioxide
Power supply voltage:DC 5.0±0.1 V

Average current:Less than 40mA @5V power supply
current:125 to @5V power supply
Interface level:3.3vcompatible with 5v
Measuring range:400-5000PPM optional
Output signal:serial UARTTL level 3.3V
Warm-up time:1min
Response time:T90 Less than 120s
Working temperature:-10-50℃
Working humidity:0-95%RHno condensation
Pin description:
Vin:Power +in
GND:power supply-GND
PWM:PWM
Hd:HD zero calibration low level is effective for more than 7 seconds
Rx:UART RXD TTL level data input
Tx:UART TXD TTL level data output
Output method:
PWM output
Assume the measurement range is 400-2000ppm
CO2:Concentration output range: 400-2000ppm
Period:1004ms±5%
High level output at the beginning of the cycle: 2ms theoretical value
Central period:1000ms±5%
Low level output at the end of the period: 2ms theoretical value
Calculation formula for obtaining current CO2 concentration value by PWM: Cppm=2000X TH-2ms/TH+TL-4ms
Cppm: CO2 concentration value calculated by the unit of ppm
TH: the time when the output is high level in one output cycle
TL: the time when the output is low in one output cycle
Due to different product batches the appearance may vary which does not affect the use.
Colour:as described
Material:PC+Aluminum Alloy

Package Contents:
1 * CO2 Sensor Module

Only the above package content other products are not included.
Note: Light reflection 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.
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