3Pcs MQ-135 NH3 NOx Alcohol Benzene Smoke CO2 Sensor Detector Module For Arduino

Description

3 Pieces (3X) MQ-135 Ammonia (NH3), Nitrogen Oxides (NOx), Alcohol, Benzene, Smoke, and CO2 Hazardous Gas Sensor Detector Module
This MQ-135 gas detector is used for leak detection of
Ammonia (NH3), Nitrogen Oxides (NOx), Alcohol, Benzene, Smoke, and Carbon Dioxide (CO2)
. Suitable for home and industrial use, it has fast response and recovery characteristics, a long life and reliable stability.
The module features dual signal outputs: An analog output (0V to ~5V), the higher the gas concentration, the higher the voltage, and a digital TTL level output to signal the presence or absence of gas. The TTL threshold is adjustable with the onboard potentiometer.
Specifications:
Operating voltage: 5 Volts DC (VCC Pin)
Maximum power consumption: 800mW (160mA at 5V)
Dual signal output (analog (AO pin) and TTL (DO pin) level output)
The DO TTL output signal is normally low, goes high when gas is detected. The threshold is adjusted with the onboard potentiometer
AO is a 0 ~ 5V analog output voltage, the higher the concentration, the higher the voltage
Indicator LEDs
Power
DO (Digital Output On)
Dimensions (approximate): 32mm x 20mm x 27mm LxWxH (1.25 x 0.8 x 1.1 inches)
Weight: 7 grams
Package Includes:
3X
MQ-135
Ammonia (NH3), Nitrogen Oxides (NOx), Alcohol, Benzene, Smoke, and CO2  Gas Sensor Detector
Module
Link to online Operating instructions and Schematic
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