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2 Pack MQ-135 Air Quality and Hazardous Gas Detection Sensor Alarm Module
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2 Pack MQ-135 Air Quality and Hazardous Gas Features
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MQ-135 Ammonia , Sulfide, Benzene Vapor Gas Sensor
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Input Voltage : DC5V & Power consumption ( current ): 150mA & DO output: TTL digital 0 and 1 ( 0.1 and 5V) & AO output:0.1-0 .3 V ( relative to pollution ) , the maximum concentration of a voltage of about 4V
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Special note: After the sensor is powered , needs to warm up around 20S, measured data was stable , heat sensor is a normal phenomenon , because the internal heating wire , if hot is not normal .
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Size: 32(L)x20(W)x22(H)mm/1.26"x0.79"x0.76"
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Package Include: 2PCS MQ-135 Sensor Module
About 2 Pack MQ-135 Air Quality And Hazardous Gas
Sensitive material MQ135 gas sensor is used in clean air low conductivity tin oxide (SnO2). When the sensor is kept in their environment In the polluting gases , the conductivity sensor with increasing air pollution in gas concentration increases. Using a simple circuit can change the conductivity Conversion of an output signal corresponding to the gas concentration . MQ135 sensor for ammonia, sulfide , benzene vapor high sensitivity of the smoke and other harmful monitor is also very good. This sensor can be seized Measure a variety of harmful gases , is a low-cost sensors for a variety of applications .
