MQ-2 Gas Sensor
Specification:
Product dimensions: 32 x 20 x 15 (L x W x H)
Chip: LM393, ZYMQ-2 gas sensors
Working voltage: DC 5V
Detection of gas: combustible gases, fumes
Detectable concentration: 300-10000ppm (flammable gas)
Electrical properties:
Input voltage: DC5V
Power consumption (current): 150mA
DO output: TTL digital 0 and 1 (0.1 and 5V)
AO output: 0.1 - 0.3V (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
1.VCC: positive power supply (5V)
2.GND: power supply is negative
3.DO: TTL switching signal output
4.AO: analog signal output
Module Applications:
Gas may be used in homes and factories leakage monitoring device suitable for the detection of gas, butane , propane ,
methane , smoke , etc.
Package included:
MQ2 * 1
