Features:link
http://wiki.seeed.cc/Grove-Gas_Sensor-MQ9/- 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
Package Included:
1 x MQ - 9 Carbon Monoxide CO Alarm Combustible Gas Sensor Module S
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