Description

The MQ-7 Gas Sensor is specifically designed for detecting carbon monoxide (CO) in the air. Utilising sensitive tin oxide (SnO2) material and high-low temperature cycling detection, this sensor ensures precise CO detection while cleaning stray gases during high-temperature operation. Its dual output (TTL and analog) and rapid response make it suitable for monitoring CO levels in homes or industrial environments. With its cost-effective design and reliable performance, this module is an excellent solution for various gas detection applications.

Why Choose the MQ-7 Gas Sensor?

The MQ-7 Gas Sensor offers unparalleled sensitivity for carbon monoxide detection while maintaining reliability and stability. Its robust dual-panel design, fast recovery characteristics, and long lifespan make it a trusted choice for CO monitoring. This sensor is ideal for safety-critical applications, offering simple integration with microcontrollers or relays, making it perfect for both beginners and experienced users.

Key Features

High Sensitivity: Specialised for carbon monoxide detection.
Dual Signal Output: Includes TTL and analog outputs for flexible integration.
Robust Design: Features a durable dual-panel structure with power indicators.
Rapid Response: Quickly detects and recovers from gas presence.
Long Lifespan: Offers reliable and stable performance over time.
Simple Integration: Easily connects to microcontrollers or relay modules.
Compact and Versatile: Includes four screw holes for secure mounting.

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-7 Gas Sensor is the ideal choice for carbon monoxide monitoring in both residential and industrial settings. Its advanced detection capabilities, compact design, and robust construction ensure dependable performance for critical safety applications.