MH-Z19B NDIR CO2 Sensor Module

About this product

MH-Z19B NDIR carbon dioxide sensor module measuring 0-5000ppm over UART or PWM output. Uses infrared absorption for CO2-specific readings with automatic baseline correction. Suited for indoor air quality monitoring and ventilation control.

Ultrasonic, IR, temperature, humidity, motion, current, camera and RF sensor modules - plus relay, logic-level and breakout boards for prototyping and production.

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Specifications

Model

MH-Z19B

Sensing Principle

NDIR (non-dispersive infrared)

Detection Range

0-5000ppm

Accuracy

±(50ppm + 5% of reading)

Interface

UART (3.3V TTL), PWM

Supply Voltage

4.5-5.5V DC

Peak Current

150mA

Preheat Time

3 minutes