9 stks Gasdetectie Sensor Module MQ-2 MQ-3 MQ-4 MQ-5 MQ-6 MQ-7 MQ-8 MQ-9 MQ-135 Sensor Module Gas Sensor Starter Kit

9pcs Gas Detection Sensor Module MQ-2 MQ-3 MQ-4 MQ-5 MQ-6 MQ-7 MQ-8 MQ-9 MQ-135 Sensor Module Gas Sensor Starter Kit

Description:

Gas may be used in homes and factories leakage monitoring device suitable for the detection of gas, butane , propane , methane , smoke , etc. ;

-Using 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 characteristics

-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

Packet Contains:
1pc x MQ-2 Sensor
1pc x MQ-3 Sensor
1pc x MQ-4 Sensor
1pc x MQ-5 Sensor
1pc x MQ-6 Sensor
1pc x MQ-7 Sensor
1pc x MQ-8 Sensor
1pc x MQ-9 Sensor
1pc x MQ-135 Sensor