Product Description: MQ-135 Air Quality Detection Module
The MQ-135 is a versatile semiconductor gas sensor designed for detecting a wide range of hazardous gases, including ammonia (NH3), benzene (C6H6), alcohol, smoke, and carbon dioxide (CO2). It is commonly used in air quality monitoring applications due to its high sensitivity and fast response time.
Key Features:
- Target Gases: Detects various gases including ammonia, benzene, alcohol, nitrogen oxides (NOx), smoke, and CO2.
- Operating Voltage: Requires a power supply of 5V DC, making it compatible with many microcontroller platforms like Arduino.
- Output Types: Provides both analog output (0V to 5V) for continuous monitoring and digital output (TTL) for threshold detection.
- Sensitivity Adjustment: The sensor’s sensitivity can be adjusted using an external load resistor, allowing for calibration based on specific environmental conditions.
- Wide Detection Range: Capable of measuring gas concentrations from 10 ppm to 1000 ppm, depending on the specific gas being detected.
Specifications:
Parameter Value
Supply Voltage (Vc) 5V ? 0.1V
Heater Voltage (VH) 5V ? 0.1V
Load Resistance (RL) Adjustable
Sensitivity High sensitivity to NH3, C6H6, CO2
Preheating Time ? 24 hours
Operating Temperature -10?C to 50?C
Humidity Range < 95% RH
Applications:
The MQ-135 sensor is suitable for:
- Air Quality Monitoring: Used in devices designed to monitor indoor and outdoor air quality.
- Environmental Testing: Ideal for assessing air pollution levels in various environments.
- Industrial Safety: Employed in factories and laboratories to detect hazardous gas leaks.
- Home Automation: Can be integrated into smart home systems for monitoring air quality.
Package Included:
1 x MQ-135 Air Quality Detection Module. Please note that the product image is for illustrative purposes only. The actual product may vary slightly in appearance!
4 Way 4 Channel 10A 5VDC Relay Module with Opto Isolated High & Low Trigger With Screw Terminal 




There are no reviews yet.