Description

The MQ-9 Gas Sensor is a versatile detection module designed to identify carbon monoxide (CO) and combustible gases such as methane and propane. This sensor utilises a sensitive tin oxide (SnO2) material and high-low temperature cycling detection to ensure accurate and reliable measurements. Its low-cost design and dual output (TTL and analog) make it ideal for various gas detection applications in both residential and industrial environments.

Why Choose the MQ-9 Gas Sensor?

The MQ-9 Gas Sensor offers exceptional sensitivity and reliability for detecting both carbon monoxide and combustible gases. Its robust design, fast response time, and easy integration make it a practical choice for monitoring gas levels in safety-critical applications. With its ability to differentiate between gases and resist interference from ethanol vapour and soot, this sensor ensures dependable performance.

Key Features

Dual Detection: High sensitivity for carbon monoxide and combustible gases like methane and propane.
Dual Signal Output: Includes TTL and analog outputs for versatile integration.
Robust Design: Durable dual-panel structure with power indicators.
Rapid Response: Quickly detects and recovers from gas exposure.
Long Lifespan: Offers reliable and stable performance over time.
Easy Mounting: Four screw holes for secure positioning.
Wide Applications: Ideal for hydrogen leak monitoring and CO detection.

Technical Specifications

Sensitive Material: Tin oxide (SnO2)
Detection Method: High-low temperature cycling (1.5V and 5.0V heating)
Input Voltage: DC 5V
Power Consumption: 150mA
DO Output: TTL digital 0 and 1 (0.1V and 5V)
AO Output: 0.1–0.3V (relative to pollution), up to 4V at maximum concentration
Warm-Up Time: Approximately 20 seconds for stable readings
Wiring: VCC (5V), GND (ground), DO (TTL signal), AO (analog output)

The MQ-9 Gas Sensor is an ideal solution for monitoring carbon monoxide and combustible gas levels in homes and industries. Its advanced sensing capabilities, compact design, and reliable construction ensure efficient and effective gas detection, enhancing safety in critical environments.