Description

The MQ-9 Gas Sensor Module is an affordable and efficient solution for detecting carbon monoxide (CO), methane (CH4), and LPG gases. With its SnO2-based sensitive layer, the module operates using a dual-temperature cycle to distinguish between CO and combustible gases. The sensor is ideal for a wide range of applications, including home, industrial, and automotive gas leak detection.

Key Features & Benefits

• High Sensitivity: Detects CO, CH4, and LPG with great accuracy.
• Dual-Temperature Detection: Differentiates CO (low temp) from methane/propane (high temp).
• Long Life & Stability: Reliable and durable over extended use.
• Low Power Consumption: Efficient and energy-friendly operation.

Applications

• Home Gas Leak Detection: Ensures safety by detecting CO and flammable gases in homes.
• Industrial Monitoring: Used in factories to monitor gas levels.
• Automotive Safety: Detects gas leaks in vehicles.
• Environmental Monitoring: Tracks air quality and gas concentrations.

Specifications

• Operating Voltage (Vc): 5V ±0.1V (AC/DC)
• Heating Voltage (VH): 5V ±0.1V (High) / 1.4V ±0.1V (Low)
• Heating Time: 60 ±1 sec (High), 90 ±1 sec (Low)
• Operating Temperature: -20°C to 50°C
• Sensitivity Range:
  • CO: 20ppm to 2000ppm
  • CH4/LPG: 500ppm to 10000ppm
• Power Consumption: <340mW