MQ9 Carbon Monoxide Alarm Combustible Gas Sensor Module for Arduino

Features:

• For home or factory gas leakage monitoring devices, suitable for carbon monoxide and other combustible gases and monitoring devices

• High-quality, dual-panel design, with power indicator and TTL signal output instructions;

• DO switching signal(TTL) output and AO analog signal output

• TTL output valid signal is low. (When the output low signal light is on, it can be directly connected microcontroller or relay module)

• Analog output voltage:the higher the concentration,the higher the voltage

• Have better sensitivity to carbon monoxide detector

• Four screw holes,easy positioning

• Product Dimensions: 32 (L) * 20 (W) * 22 (H)

• Long life and stability

• Quick response and resume

Electrical performance:

• Input voltage: DC5V

• Power (current): 150mA

• DO output: TTL digital 0 and 1 (0.1 and 5V)

• AO Output: 0.1-0.3V (relatively clean), the highest concentration voltage is about 4V

• Special note: When the sensor is powered, it needs to be warmed up about 20S, so the measured data becomes stable, the heat sensor is a normal phenomenon, because its inside is with an electric wire, if not, unnomal.

Specifications

• Product Model:MQ-9

• Product Type:Semiconduct-gassensitive element

• Gas Detected:Carbon monoxide,Combustible gas

• Detectable Concentration:10-1000ppmCO, 100-10000PPM gas