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MQ-135 Air Quality Sensor Module, Model 135, High Sensitivity, Arduino

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MQ-135 Air Quality Sensor, Model 135 – High Sensitivity for Smart Air Monitoring The MQ-135 Air Quality Sensor is an essential tool for ensuring a healthy and safe environment, especially with the rising sources of pollution in homes, offices, and industrial settings. Designed by the reputable MQ brand, Model 135 delivers a practical and efficient solution for monitoring air quality and detecting harmful gases with high accuracy. Utilizing advanced low-conductivity tin oxide (SnO2) technology, the sensor detects a wide range of gases such as ammonia, hydrogen sulfide, benzene vapor, smoke, carbon dioxide, and nitrogen oxides. Its full compatibility with Arduino boards makes it the ideal choice for hobbyists and professionals working on IoT and smart system projects. Technical Specifications: - Gas Detection: Ammonia (NH3), sulfide, benzene vapor, alcohol, smoke, carbon dioxide (CO2), nitrogen oxides (NOx) - Detection Range: 10–1000 parts per million (ppm) - Operating Voltage: 5V DC - Power Consumption: 150 mA - Output: - Analog (AO): 0.1 to 4V depending on gas concentration - Digital (DO): 0 or 5V (TTL logic) - Preheat Time: 20 seconds for accurate readings after power-up - Product Dimensions: 32 × 20 × 22 mm - Country of Origin: China Key Features: - Fast response and high sensitivity to a variety of hazardous gases - Wide and stable detection range - Long operational life and reliable performance - Supports both analog and digital connections; sensitivity can be adjusted easily using the onboard potentiometer - Fully compatible with popular microcontroller boards like Arduino and Raspberry Pi Use Cases: The MQ-135 sensor is perfect for home use to detect air pollution or gas leaks, office environments for monitoring indoor air quality, industrial labs to ensure worker safety, and educational or hobbyist projects in building smart environmental monitoring systems. It is also an economical and practical option for various applications such as smart air purifiers, alarm systems, and educational laboratories. Benefits: - Provides accurate and real-time data on air quality to help you take preventive measures - Enhances living and working environments through continuous monitoring of harmful gases - Simple to install and connect to controllers or smart systems Care Instructions: - Avoid exposing the sensor to excessive humidity or heavy dust to maintain efficiency. - Always allow the sensor to preheat for 20 seconds after powering up to ensure stable readings. - Periodically clean the exterior of the sensor with a dry cloth. Choose the MQ-135 Air Quality Sensor, Model 135, for reliable, high-performance, and cost-effective air monitoring in your home, office, or electronic projects. Ensure a smarter and healthier environment with this robust and versatile sensor.

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Country of Origin: China
Model: MQ-135
Sensor Type: Air Quality Sensor
Detected Gases: Ammonia (NH3), Hydrogen Sulfide, Benzene Vapor, Alcohol, Smoke, Carbon Dioxide (CO2), Nitrogen Oxides (NOx)
Detection Range: 10–1000 ppm
Operating Voltage: 5V DC
Power Consumption: 150 mA
Sensor Outputs: Analog (0.1–4V depending on gas concentration), Digital (0 or 5V TTL logic)
Sensitivity Adjustment: Yes, via built-in potentiometer
Preheat Time: 20 seconds
Dimensions: 32 × 20 × 22 mm
Compatibility: Compatible with Arduino and Raspberry Pi
Mounting Holes: 4 holes (M3 or 3mm)

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