MH-Z19C Infrared CO2 Sensor Module

MH-Z19C Infrared CO2 Sensor Module for CO2 monitor. MH-Z19C Infrared Gas Module is a small sensor that uses the non-dispersive infrared (NDIR) principle to detect CO2 concentration in the air. The sensor has good selectivity and works independently of oxygen. It has a built-in temperature compensation and outputs data via a UART or PWM output. Compared to the previous model (MH-Z19B), the preheating time has been reduced from 3 minutes to 1 minute, and the power consumption has been optimized. The sensor calibrates itself every 24 hours (can be turned on or off by command), but zero point calibration can also be activated manually.

Datasheet

Technical Specifications

Model: MH-Z19C
Target Gas: CO2
Operating voltage: 5V DC (±0.1V)
Average current consumption: < 40mA (@5V)
Peak current: 125mA (@5V)
Interface level: 3.3 V (compatible with 5V)
Measuring range: 400 - 5000 ppm
Accuracy: ± (40ppm + 5% of reading)
Output signal: UART (TTL interface level 3.3V)
PWM- Preheating time: 1 minute
Response time: <120 s
Operating temperature: -10 - 50 °C
Operating humidity: 0 - 95% RH (non-condensing)
Dimensions: Dimensions: approx. 33 × 20 × 17 mm
Connection: 2.54 mm pitch pin strip

Package Contents

1 x MH-Z19C Infrared CO2 Sensor Module