MQ-137 DC 5V Ammonia Detection NH3 Gas Sensor Module MQ137 + Cable Set, 501 Original

MQ-137 DC 5V Ammonia Detection NH3 Gas Sensor Module Analog + TTL Level Output MQ137 + CableFeature:1. With signal output indicator light;2. Dual signal output (analog output and TTL level output);3. TTL output effective signal is low level; (the signal light is on when the output is low level, and can be connected to the MCU IO port)4. The analog output increases as the concentration increases, the higher the concentration, the higher the voltage;5. It has high sensitivity and selectivity to ammonia;6. It has a long service life and reliable stability;7. Fast response and recovery characteristics;8. With mounting holes, convenient for fixed installation;9. The probe can be plugged and unplugged to facilitate testing.Specification:Main chip: LM393, NH3 gas sensor probeWorking voltage: DC 5VModule size: 32*30*22mm/1.26*1.18*0.87\"Application: for harmful gas detection device used in home and environment, suitable for ammonia vapor detectionNote:1. There may be slight size deviations due to manual measurement, different measuring methods and tools.2. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor.1 Set X Sensor Module