Description
Product Description:MH-Z19B 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. Product Parameters:
1. Product model number: MH-Z19B2. Gas Detection: Carbon Dioxide3. Supply voltage: 4.5~5.5V DC4. Average current: <20mA (@5V power supply)5. Peak current: 150 mA (@5V supply)6. Interface level: 3.3V (5V compatible)7. Measurement range: 0~10000ppm can be selected within the range8. Output signal: Serial (UART) (TTL level 3.3V) PWMAnalog output (DAC) (default 0.4~2V) (0~3V range configurable)9. Warm-up time: 3min10. Response time: T90<120s11. Working temperature: 0?50°C12. Operating Humidity: 0 to 95% RH (non-condensing)13. Weight: 5g14. Life: >5 years Sensor Features:
1. Gas chamber with gold plating, waterproof and corrosion resistant2. High sensitivity, low power consumption3. Excellent stability4. Temperature compensation, excellent linear output5. Provides serial (UART), analog (DAC), PWM waveform output methods6. long lasting7. Water vapor interference, not poisoning Application:HVAC refrigeration equipmentAir quality monitoring equipmentFresh air systemAir purification equipmentSmart homeSCHOOL
Pin Definition:
Vin: Power Positive (Vin)GND: Negative Power Supply (GND)Vo: Analog outputPWM: PWMHD: HD (zero for school, low for more than 7 seconds)Rx: UART(RXD) TTL Level Data InputTx: UART (TXD) TTL level data output Pin 1: Analog Output VoPin 2: NonePin 3: Negative Power Supply (GND)Pin 4: Positive Power Supply (Vin)Pin 5: UART(RXD) TTL Level Data InputPin 6: UART (TXD) TTL Level Data OutputPin 7: None
Package included:
1 x MH-Z19B carbon dioxide gas sensor module with Terminal
