MQ-137 Ammonia Detection NH3 Gas Sensor Module MQ137 Analog + TTL Level Output
17,43 €
MQ-137 DC 5V Ammonia Detection NH3 Gas Sensor Module Analog + TTL Level Output MQ137 + Cable. Main chip: LM393, NH3 gas sensor probe. It has high sensitivity and selectivity to ammonia;. Dual signal output (analog output and TTL level output);.
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