Ultrasonic Sensor HC-SR04
$3
MQ-135 Air Quality and Harmful Gas Sensor Module
$4
Monitor the air you breathe with the versatile MQ-135 Air Quality Sensor Module. This sensor is an excellent choice for engineers, technicians, and hobbyists looking to build devices that can detect a wide range of harmful gases, including Ammonia (NH3), Benzene, alcohol, and smoke. Whether you are creating a home air quality monitoring system, a smart ventilation controller, or an environmental sensing project, the MQ-135 provides the reliable data you need to ensure a healthier environment.
The MQ-135 Air Quality Sensor Module is designed for the detection of a broad spectrum of gases that impact air quality. It is highly sensitive to ammonia, sulfide, and benzene steam, and also responds well to smoke and other toxic gases. The core of the module is the SnO2 (tin dioxide) semiconductor sensor, whose conductivity changes in the presence of these target gases. This module is incredibly user-friendly, featuring both an analog output that provides a real-time voltage signal proportional to the gas concentration, and a digital output. The digital output's threshold can be easily adjusted using the onboard potentiometer, allowing it to trigger a signal when the air quality drops below a certain level.
Key Features:
Wide Detection Range: Senses a variety of gases including Ammonia (NH3), Nitrogen Oxides (NOx), alcohol, Benzene, smoke, and Carbon Dioxide (CO2).
Dual Output Capability: Provides both an analog voltage output for precise measurements and a digital output for simple threshold-based alerts.
Adjustable Sensitivity: An onboard potentiometer allows for easy calibration of the digital output trigger level.
High Sensitivity and Fast Response: Quickly detects changes in air quality, making it ideal for real-time monitoring.
Long Lifespan and Stability: Offers reliable and consistent performance for long-term air quality monitoring projects.
Technical Specifications:
Operating Voltage: 5V DC
Target Gases: Ammonia, Benzene, Sulfide, Smoke, CO2, and other harmful gases.
Detection Range: 10 to 1000 ppm (parts per million)
Outputs: Analog (A0) and Digital (D0)
Dimensions: 32mm x 20mm x 22mm
Preheat Time: Approximately 20-30 seconds
Common Applications:
Indoor Air Quality Monitors: Build devices to monitor the air quality in homes, offices, and workshops.
Environmental Monitoring Systems: Create stations to track pollution levels in specific areas.
Smart Ventilation Systems: Design automated systems that activate fans or purifiers when poor air quality is detected.
Agricultural Applications: Monitor air quality in greenhouses and livestock farms.
Educational Tools: An excellent component for students to learn about environmental science and sensor technology.
Extra Description
Package Includes:
1 x MQ-135 Air Quality Sensor Module
Why Choose This MQ-135 Air Quality Sensor? At Hitech Electronics & Hardware, we provide components that empower innovation. The MQ-135 is a reliable and cost-effective sensor that delivers the performance needed for both simple hobbyist projects and more complex environmental monitoring systems. Trust in our quality components to bring your air quality awareness projects to life.
Pro Tip:
The MQ-135 sensor's resistance changes with gas concentration. To get meaningful data, you'll need to calibrate it. A simple starting point is to take a reading in fresh, clean air to establish a baseline R0 value for your specific environment.
