Ammonia Gas Sensor - MQ-137
4.7 (40 items)
Limited Time Sale$41.99 cheaper than the new price!!
Free cash-on-delivery fees for purchases over $99
Product details
| Management number | 205893613 | Release Date | 2025/11/02 | List Price | $42.00 | Model Number | 205893613 | ||
|---|---|---|---|---|---|---|---|---|---|
| Category | |||||||||
The MQ-137 is an Ammonia (NH‚ƒ) gas sensor from Winsen. The sensing element is SnO2, which has lower conductivity in clean air. When NH‚ƒ (Ammonia) gas exists, the sensors conductivity gets higher along with the gas concentration rising. A simple circuit makes measuring this change in conductivity and turning it into data fairly straight-forward, but does require some calibration.
For easy Solderability; use our [Gas Sensor Breakout Board](https://www.sparkfun.com/products/8891).
**Documents:**
* [Datasheet](https://cdn.sparkfun.com/assets/7/0/2/f/8/MQ137__Ver1.4__-_Manual.pdf)
**Videos**
Safety & Tools
Correction of product information
If you notice any omissions or errors in the product information on this page, please use the correction request form below.
Correction Request Form