3Pcs MQ-135 Air Quality and Hazardous Gas Detection Sensor Module
$25.57
$47.05
The MQ-135 sensor works based on the principle of a gas-sensitive semiconductor layer made of SnO2 (tin dioxide). When the target gas is present, the conductivity of the semiconductor layer changes. This change in conductivity can be measured and converted into an electrical signal that corresponds to the concentration of the gas. Input voltage: DC5VPower consumption ( current ): 150mADO 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 4VColor: Silver, BlueManufacturer: XimimarkPart Number: 430578031Item Weight: 0.634 ouncesProduct Dimensions: 0.79 x 1.26 x 0.87 inchesItem model number: 430578031
