Winsen Electronics manufactures an air quality sensor and VOC sensor MQ138 for IAQ monitor applications.
The sensitive material of the MQ138 gas sensor is SnO2, which with lower conductivity in clean air. When VOC gas exists, the sensor’s conductivity increases, and the gas concentration rises. Users can convert the conductivity change to the corresponding output signal of gas concentration through a simple circuit.
MQ138 gas sensor has a high sensitivity to toluene, acetone, alcohol, and methanol, and also can monitor hydrogen and other organic vapour well. It can detect kinds of organic gases and is a kind of low-cost sensor for varieties of applications.
It is widely used in domestic VOC gas alarms, industrial VOC gas leakage alarms, and portable VOC gas detectors.
1 x Winsen MQ138 VOC Gas Sensor
15 Days Warranty Against Sealed Product
This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defect. Reimbursement or replacement will be done against manufacturing defects.
What voids the warranty:
If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.
Warranty Against Sealed Product:
This product comes with manufacturer seal so, warranty Policy shall cover only those issues pertaining to the manufacturing defects in the product. In any other case, No return will be accepted if the seal is broken.