MQ-135 Air Quality & Hazardous Gas Sensor Module | CO2, Smoke, Ammonia
₵35.00
Detect smoke and dangerous gases instantly. The MQ-135 is the most versatile gas sensor for air quality monitoring. It detects a wide range of gases including Ammonia, Sulfide, Benzene, Smoke, and CO2. Perfect for “Smart Home” safety systems and environmental monitoring.
- Gases Detected: NH3, NOx, Alcohol, Benzene, Smoke, CO2.
-
Output: Analog (Gas Concentration) and Digital (Alarm Trigger).
-
Warm-up Time: ~20 seconds.
-
Best For: Air Quality Monitors, Smoke Alarms, and Industrial Safety.
1 in stock
The MQ-135 Air Quality Sensor Module is a high-precision gas sensor designed to detect air pollutants such as ammonia (NH₃), sulfur dioxide (SO₂), benzene, carbon monoxide (CO), smoke, and other volatile organic compounds (VOCs). Ideal for home air quality monitoring, industrial safety, and IoT-based environmental tracking, this sensor helps ensure clean and safe air in your surroundings.
🔹 Dual Output & Adjustable Sensitivity for Easy Integration ⚡
✔ Gas Detection: Ammonia (NH₃), benzene, CO, smoke, alcohol, NOx, and VOCs.
✔ Dual Output: Analog (gas concentration levels) & Digital (threshold-based alerts).
✔ Adjustable Sensitivity: Built-in potentiometer for fine-tuning detection levels.
✔ Operating Voltage: 5V DC (Compatible with Arduino & Raspberry Pi).
✔ Preheat Time: 20 seconds for stable readings.
✔ Long-Lasting & Reliable: Durable sensing element for consistent performance.
🔹 Applications – Where to Use the MQ-135 Sensor 🛠️
✔ Indoor Air Quality Monitoring – Detects pollutants and gases in homes & offices.
✔ Industrial Safety & Gas Leak Detection – Used in factories and chemical plants.
✔ Smart Home & IoT Automation – Integrates with smart ventilation systems.
✔ Vehicle Emission Testing – Measures harmful gas emissions in garages and labs.
✔ Environmental Monitoring Stations – Tracks air pollution levels in urban areas.
🔹 How to Use & External Resources 📚
The MQ-135 sensor connects easily to Arduino, Raspberry Pi, ESP8266, and other microcontrollers. Power it with 5V, connect the analog or digital output, and start measuring air quality.
📖 Helpful Resources for MQ-135 Air Quality Sensor Module:
✔MQ-135 Datasheet & Specifications
✔ How to Interface MQ-135 with Arduino
✔ Raspberry Pi Air Quality Sensor Guide
✔ YouTube Tutorials – MQ-135 Air Quality Monitoring Projects
🔹 Best Price & Availability in Ghana 🇬🇭
Looking for an MQ-135 Air Quality Sensor Module in Ghana? Whether for home pollution monitoring, industrial gas detection, or IoT-based environmental tracking, this sensor offers high accuracy and easy integration. Order today for fast delivery across Ghana!
Related products
3×4 Matrix Membrane Keypad Module | 12 Button Numeric Pad
A simple and reliable input device for Arduino and DIY electronics projects. This flexible 12-key keypad provides only the essential keys (0–9, *, #)—no letters—making it ideal for numeric-only applications. It comes with a peel-and-stick adhesive backing for quick mounting on enclosures, panels, or doors.
-
Keys: 12 (Telephone-style layout)
-
Interface: 7 pins (2.54 mm standard pitch)
-
Mounting: Self-adhesive sticker backing
- Best for: Electronic door locks, vending machines, access control systems, phone dialers, and keypad-based Arduino projects.
BMP180 Digital Barometric Pressure & Altitude Sensor Module
Predict the weather or measure your altitude. The BMP180 is a high-precision sensor that measures air pressure and temperature. Because pressure changes with height, it also works as an incredibly accurate altimeter (±1 meter accuracy).
-
Measures: Pressure (Pa) & Temperature (C)
-
Interface: I2C (SDA/SCL)
-
Voltage: 3.3V to 5V Compatible
-
Best For: Weather stations, Drones, and GPS altitude correction.
DS3231 RTC Real-Time Clock Module
The DS3231 is a highly accurate I2C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO).
-
Chip: Maxim DS3231 (High Precision)
-
Memory: Built-in AT24C32 32K I2C EEPROM
-
Voltage: 3.3V – 5.5V DC
-
Interface: I2C (SCL, SDA)
-
Battery Backup: Holds time when power is off (Coin cell slot included)
-
Accuracy: Much higher than the standard DS1307
Flame Sensor Module (YG1006) | Infrared Fire Detector for Arduino
-
Sensor Type: YG1006 NPN Phototransistor (High Speed).
-
Detection Range: Up to 1 meter (depending on flame size).
-
Spectrum: 760nm - 1100nm (Invisible IR light).
-
Best For: Fire Fighting Robots, Smart Kitchen Alarms, and Safety Systems.
LDR Photosensitive Sensor Module (4-Pin) | Light Detector
- Sensor Type: Light Dependent Resistor (Photoresistor).
-
Outputs: Digital (D0) & Analog (A0).
-
Sensitivity: Adjustable via Blue Potentiometer.
- Best For: Automatic Lights, Sun Trackers, and Laser Tripwires.
NEO-6M GPS Module V2 with Ceramic Antenna | Flight Controller & Tracker
-
Chipset: U-Blox NEO-6M.
-
Antenna: High-gain Active Ceramic Antenna (Included).
-
Data Retention: EEPROM + Battery (Saves configuration).
-
Best For: Drone Flight Controllers, Vehicle Trackers, and Speedometers.
NTC Thermistor Sensor Module
Soil Moisture Sensor Module (YL-69) | Automatic Plant Watering System
Never forget to water your plants again. The Soil Moisture sensor measures the water content in soil. When the soil gets dry, the sensor output changes, allowing your Arduino to turn on a water pump automatically.
-
Outputs: Analog (Exact moisture level) & Digital (Threshold switch)
-
Adjustable: Set your "Dry" trigger point with the blue potentiometer.
-
Ideal For: Smart irrigation systems, greenhouse monitoring, and science projects.

Reviews
There are no reviews yet.