5pcs MQ-2 Gas and Smoke Analog Sensor Breakout Board for Arduino Raspberry Pi ES

Description

5pcs MQ-2 Gas and Smoke Analog Sensor Breakout Board for Arduino Raspberry Pi ESP8266 MQ2 5V DC (MQ-2)
Description
Detection sing high-quality dual-panel design, with power indicator and TTL signal output instructions; The switching signal having a DO (TTL) output and analog output AO ; TTL output valid signal is low . ( Low- level signal when the output light can be directly connected to the microcontroller or relay module ) Analog output voltage with the higher concentration of higher voltage. A gas, natural gas, city gas , smoke better sensitivity. There are four screw holes for easy positioning ; Has a long life and reliable stability Rapid response and recovery characteristic Input voltage : DC5V Power consumption ( current ): 150mA DO output : TTL digital 0 and 1 ( 0.1 and 5V) AO output :0.1-0 .3 V ( relative to pollution ) , the maximum concentration of a voltage of about 4V Special note: After the sensor is powered , needs to warm up around 20S, measured data was stable , heat sensor is a normal phenomenon , because the internal heating wire , if hot is not normal . VCC: positive power supply (5V) GND: power supply is negative DO: TTL switching signal output AO: analog signal output
Features:
Using a simple circuit to convert the change in conductivity of the gas concentration corresponding to the output signal.
MQ-2 gas sensor high on gas, propane, hydrogen sensitivity of detection of natural gas and other flammable vapors are also very good.
This sensor can detect a variety of flammable gas, is a low-cost sensors for a variety of applications.
Analog output sensor for measuring changes in H2, LPG, CH4, CO, Alcohol, Smoke or Propane
Handling
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of payment.
Delivery
We Do Not Ship Outside of the Continental US.
Return Policy
All items qualify for returns within 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged.
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