1pcs MICS-6814 Air Quality Gas Sensor Module Gas Detection Carbon Monoxide CO/Nitrogen Dioxide NO2/Ammonia NH3 Sensor for Arduino : Amazon.es: Bricolaje y herramientas
Interfacing MQ137 Sensor with Arduino to Measure Ammonia in PPM
MQ137 Ammonia NH3 Gas Sensor Module
Sensor de gas MikroElektronika Ammonia Click - MIKROE-4151, para usar con MQ-137 | RS
Interfacing MQ137 Sensor with Arduino to Measure Ammonia in PPM