Mq gas sensor module

Brand new and high quality. Mainly used for CO collection detection in family, factory, underground operation. Detection Zone:10 to 1000ppmm. Characteristic Gas:100ppmm co. Sensitive Resistance:2K to 20K in 100ppm co. Sensitivity:>=3%. Response Time: Views: 2

Product Description MQ-7 sensor has high sensitivity to carbon mono oxide. It is low cost and suitable for various applications. Using high-quality dual-panel design, with a power indicator and TTL signal output instructions; With a the DOUT switch signal (TTL) output, and AO analog signal output; TTL output valid signal is low level; (When the low level output signal lights, it can be connected directly to the microcontroller or relay module) TTL output signal can be connected directly to a microcontroller IO port or connect to the relay module, potentiometer is used to adjust the output level transition threshold Features Wide detecting scope Stable and long life Fast response and High sensitivity Analog and Digital Outputs Trigger Level configuration Potentiometer Specifications Size: 32mm X22mm X27mm Operating voltage: DC 5V Analog Output (AOUT): 0~5V analog output voltage Digital Outout (DOUT): 0V or 5V output (the higher the voltage the higher the concentration) Configuration: Through Potentiometer (adjusts the output level transition) Preheat Duration: 20s