Infrared Carbon Dioxide CO2 Gas Sensor 0-5000ppm

This carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose smart small-scale sensor that uses non-dispersive infrared (NDIR) principle to detect the presence of CO2 in the air, with good selectivity and anaerobic Gas dependence, long life and other characteristics; built-in temperature compensation; at the same time with serial output, analog output and PWM output, easy to use. The sensor is a high-performance sensor that combines mature infrared absorption gas detection technology with precise optical path design and sophisticated circuit design.

Features:
– Gas chamber with gold plating, waterproof and corrosion resistant
– High sensitivity, low power consumption
– Excellent stability
– Temperature compensation, excellent linear output
– Provides serial (UART), analog (DAC), PWM waveform output methods
– Long lasting
– Water vapor interference, not poisoning

Specifications:
Product model number: MH-Z19B
Gas Detection: Carbon Dioxide
Supply voltage: 4.5~5.5V DC
Average current: <20mA (@5V power supply)
Peak current: 150 mA (@5V supply)
Interface level: 3.3V (5V compatible)
Measurement range: 0~5000ppm
Warm-up time: 3min
Response time: T90<120s Working temperature: 0～50°C Operating Humidity: 0 to 95% RH (non-condensing) Weight: 5g Life: >5 years
Output signal: Serial (UART) (TTL level 3.3V)
Output signal: PWM
Output signal: Analog output (DAC) (default 0.4~2V) (0~3V range configurable)

Application:
– HVAC refrigeration equipment
– Air quality monitoring equipment
– Fresh air system
– Air purification equipment
– Smart home
– Schools

Interfacing:
Vin: Power Supply Positive (Vin)
GND: Power Supply (GND)
Vo: Analog output
PWM: PWM
HD: HD (zero for school, low for more than 7 seconds)
Rx: UART(RXD) TTL Level Data Input
Tx: UART (TXD) TTL level data output

Package Includes:
1 x Infrared Carbon Dioxide CO2 Gas Sensor