Feature
1. With signal output indicator light;
2. Dual signal output (analog output and TTL level output);
3. The TTL output valid signal is low level; (when the output is low level, the signal light is on, and it can be connected to the IO port of the microcontroller)
4. The analog output increases as the concentration increases, the higher the concentration, the higher the voltage;
5. High sensitivity and selectivity to ammonia;
6. Long service life and reliable stability;
7. Quick response recovery function;
8. With mounting holes, easy to install;
9. The probe is pluggable, which is convenient for testing.
Package Included
1 x MQ-137 Ammonia Sensor Module NH3 Sensor Module
