Ammonia Gas Sensor - MQ-137 Spedizione:2-4 Settimane There you go

There you go

We put a 4300Ω 0

A multiplexer/Mux is required to communicate to multiple XA1110 sensors on a single bus

3V Arduino boards

Ammonia Gas Sensor - MQ-137 Spedizione:2-4 Settimane There you goThe MQ 137 is an Ammonia (NH) gas sensor from Winsen. The sensing element is SnO2, which has lower conductivity in clean air. When NH (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.