Gas Sensor Modules Flammable Gas Sensor Gas Sensor Starter Kit MQ131 MQ136 MQ137 MQ138 MQ139 MG811 TGS813 Gas Detection Module Low/High Concentration for DIY Kits
Feature:
1. Superior Quality Design: Adopting a high-quality dual-panel setup, flammable gas sensor comes with power and TTL signal output indicators for easy and efficient usage.
2. Versatile Signal Output: Equipped with both DO switch signal (TTL) output and AO analog signal output, CO ozone gas sensor offering diverse and flexible usage options.
3. TTL Output: The TTL output provides high and low level signals. Gas detection module can be directly connected to a microcontroller or relay module, making it highly convenient for all kinds of operations.
4. Analog Output: The analog output voltage changes with concentration, gas sensor detector can providing real-time and responsive adjustments based on the conditions.
5. Quick Response and Recovery: Known for its fast response and recovery characteristics, gas sensor modules guarantees efficient operation, saving both your time and effort.



Specification:
Origin: Mainland China
Material: Mixture
Input voltage: DC5V
Power consumption (current): 150mA
DO output: TTL digital quantities 0 and 1 (0.1 and 5V)
AO output: analog level signal
Size: 35x21x28mm/1.37x0.82x1.10inch
Wiring method:
1. VCC: Connected to the positive pole of the power supply (5V)
2. GND: Connected to the negative pole of the power supply
3. DO: TTL switch signal output
4. AO: Analog signal output
Specifications:
MQ131 Low Concentration (Plastic Encapsulated) Ozone Sensor Module
MQ131 High Concentration (Metal) Ozone Sensor Module
MQ136 (metal) hydrogen sulfide sensor module
MQ137 (metal) ammonia sensor module
MQ138 (metal) formaldehyde sensor module
MQ139 (metal) Freon sensor module
MG811 (metal) carbon dioxide sensor module
TGS813 (plastic sealed) combustible gas sensor module
Model: MQ131 Low/MQ131 High/MQ136/MQ137/MQ138/MQ139/MG811/TGS813(Optional)

Note:
After the sensor is powered on, it needs to be preheated for about 20s to stabilize the measured data. Heating the sensor is a normal phenomenon because there is an electric heating wire inside, which is abnormal if the hand is hot.
Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!
Please allow 1-2cm measuring deviation due to manual measurement.

 

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