MQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module
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MQ-135 gas sensor Module The MQ-135 gas sensor module is a device that is used for sensing a range of gases, including ammonia (NH3), sulfur dioxide (SO2), and carbon monoxide (CO). It is based on a metal oxide semiconductor (MOS) gas sensor, which uses a semiconductor material to detect gases. The MQ series of gas sensors utilize a small heater inside with an electrochemical sensor these sensors are sensitive to a range of gasses are used at room temperature. MQ 135 alcohol sensor is a Sno2 with a lower conductivity of clean air. When the target explosive gas exists, then the sensor's conductivity increases more increasing more along with the gas concentration rising levels. By using simple electronic circuits it converts the charge of conductivity to a corresponding output signal of gas concentration The MQ135 gas sensor has high sensitivity for ammonia, sulfide, benzene steam, smoke, and other harm full gas. It is low cost and suitable for different applications. The MQ135 Gas Sensor Module is a high-quality, reliable tool for monitoring air quality. The module's unique design makes it ideal for use in both industrial and commercial applications that require accurate readings of various gases. It uses an advanced sensing element to detect the presence of dangerous combustible gasses such as carbon monoxide (CO), hydrogen sulfide (H2S) and nitrogen dioxide (NO2). This sensor has been tested against strict industry standards which guarantees its accuracy and reliability when measuring levels of toxic substances in different environments. Its highly sensitive sensors are capable of detecting concentrations even at lower threshold values than other comparable gas sensors on the market today. Additionally, this easy-to-install device offers greater durability due to its robust casing construction making it suitable for indoor or outdoor operation conditions without compromising performance or efficiency during extended operating periods over time. Whether you're looking to improve safety around your workplace or monitor air pollution levels within a home environment ––the MQ 135 Gas Sensor Module can provide reliable data quickly with minimal effort required by users from setup through utilization stages alike - giving peace-of-mind assurance! Robocrage has the best technology, guaranteed quality, and always puts you first. Our products are top-notch but affordable, and our team is here to help you every step of the way. Join us and experience the difference! Iotcart offers the best MQ135 gas sensor price. Upgrade your environment today with Robocrage's MQ 135 Air Quality Sensor! Breathe better, live better. Buy MQ135 now! Check out the entire range of Gas Sensors . MQ-135 Gas Sensor Applications: Air quality monitor Detection of harmful gases Domestic air pollution detection Industrial pollution detection Portable air pollution detection Read our blog MQ sensor where we explained what is a gas sensor, what is 1ppm equal to, MQ sensor list of different series and their features. Technical Features of the MQ135 gas sensor: This gas sensor works between 2.5V to 5.0V. Uses around 150mA of current while running. It can detect gases like NH3, NOx, CO2, alcohol, benzene, and smoke. When powered at 5V, it gives out a digital signal from 0V to 5V in TTL logic. it also provides an analog output in the same voltage range. Typically, it operates at 5V. MQ135 Gas Sensor Working Principle: The MQ 135 gas sensor operates on the principle of detecting gases through the conductivity of its steel exoskeleton which holds a sensing element. By heating this sensing element, its sensitivity to gas molecules is enhanced. When gas molecules come into contact with the material, they alter its electrical conductivity, leading to a change in resistance. This variation in resistance correlates directly with the concentration of the target gas present in the surrounding environment. MQ135 Gas Sensor Pin Diagram: MQ135 Pinout For Module: Vcc: This supplies power to the sensor, typically at a voltage of +5V. Ground: It is used to connect the module to the system ground. Digital Out: This pin can be utilized to obtain digital output by setting a threshold value using the potentiometer. Analog Out: Outputs an analog voltage ranging from 0 to 5V, proportional to the gas intensity. MQ135 Pinout For Sensor: H-Pins: One of the two H pins connects to the power supply, while the other connects to the ground. A-Pins: Both A and B pins can be interchanged and are connected to the supply voltage. B-Pins: A and B pins are interchangeable. One pin serves as an output, while the other is pulled to the ground.
- Detects NH3, CO2, benzene, alcohol, smoke, and NOx gases
- Dual output: Analog (0–5V) and Digital (TTL)
- Operating voltage: 5V DC, ~150mA current draw
- Compatible with Arduino, Raspberry Pi, and 5V microcontrollers
- Onboard potentiometer for threshold adjustment
- Robust PCB design for indoor/outdoor use
- High sensitivity to harmful gases
- Low-cost and reliable performance
- Easy integration with development boards
- Suitable for portable and fixed air quality monitors
- Wide application in industrial and domestic environments
| Model | MQ135 Gas Sensor Module |
|---|---|
| Operating Voltage | 5V (DC) |
| Detecting Range | 10ppm to 1000ppm |
| Dimensions | 3 x 2 x 1 cms |
| Weight | 5 grams |
What gases can the MQ-135 sensor detect?
The MQ-135 detects NH3, CO2, benzene, alcohol, smoke, and NOx gases with high sensitivity.
Is the MQ-135 compatible with Arduino?
Yes, it is fully compatible with Arduino, Raspberry Pi, and other 5V microcontrollers via analog or digital output.
What is the operating voltage of the MQ-135 module?
It operates at 5V DC with a current consumption of approximately 150mA.
Does it provide analog and digital outputs?
Yes, it offers both analog (0–5V) and digital (TTL-level) output signals for versatile integration.
Can the MQ-135 be used for indoor air quality monitoring?
Yes, it is widely used in domestic and industrial air pollution detection systems due to its accuracy and reliability.
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About MQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module by Iotcart
Buy MQ-135 Gas Sensor Module online in India. Detects NH3, CO2, smoke, benzene. Compatible with Arduino & Raspberry Pi. 5V operation.
Categorised under: Sensors› Gas Sensor