Description
Carbon Monoxide, Methane and Combustible Gas Sensor Module MQ-9 is useful for gas leakage detecting, it used the sensitive material SnO2, which with lower conductivity in clean air. It make detection by method of cycle high and low temperature, and detect CO when low temperature (heated by 1.5V). The sensors conductivity is more higher along with the gas concentration rising. When high temperature (heated by 5.0V), it detects Methane, Propane etc combustible gas and cleans the other gases adsorbed under low temperature. MQ-9 gas sensor has high sensitivity to Carbon Monoxide, Methane and LPG. The sensor could be used to detect different gases contains CO and combustible gases, it is with low cost and suitable for different application.
SPECIFICATION
| Model | MQ-9 |
| Operating Voltage (VDC) | 5 |
| Current Consumption (mA) | 150 |
| Do output | TTL digital 0 and 1 (0.1 and 5V) |
| Ao output | 0.1-0.3V (relatively clean) |
Wire Connections
VCC – Positive pole (5V)
GND – Negative pole
DO – TTL switch signal output
AO – Analog signal output
Applications
- The domestic gas leakage detector
- Industrial gas detector
- Portable gas detector
