Description
This MQ137 sensor module is designed to detect NH3 Ammonia gas along with other gases. The sensing element is SnO2, which has lower conductivity in clean air. When NH‚ƒ (Ammonia) gas is introduced, the sensor’s conductivity increases along with the increase in Ammonia gas concentration. The board comes with basic circuitry to change the conductivity or resistance to voltage and output it to header pins, DOut and AOut.
Technical Details
- Input Voltage: 5V
- Operating Current: 150mA
- Output Signal: Analog and Digital
- Detection Range: 5-500ppm (Ammonia)
- Dimensions: 39 x 25 x 22mm
- Weight: 8g
Shipping List
- 1x Gas Sensor MQ137