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ASAIR AM2305B Digital Temperature and Humidity Sensor

ASAIR AM2305B Digital Temperature and Humidity SensorASAIR AM2305B Sensor with digital signal output..

Rs.1,590.70 (inc GST)
Rs.1,348.05 + GST

SKU: 8973 | DAI187
Stock: 15

XY MD02 Modbus SHT20 Sensor Temperature and Humidity Transmitter

XY Temperature and Humidity Transmitter ModuleXY MD02 SHT20 Sensor for precise temperature and humid..

Rs.590.00 (inc GST)
Rs.500.00 + GST

SKU: 4027 | DAG749
Stock: 200

GAS and Air Quality Sensor

Buy Gas & Air Quality Sensors Online in India – Reliable Detection Modules for Safety & IoT

DNA Technology, an online electronic component store in India based in Nashik, supplies a comprehensive range of gas and air quality sensors for environmental monitoring, safety systems, and IoT applications. We provide industries, research labs, and embedded developers across India with genuine, performance-tested modules that ensure accurate gas detection and air analysis.

Our sensors are designed to measure the concentration of gases like LPG, CO₂, CO, methane, and smoke while monitoring overall air quality. These modules are ideal for automation systems, air purifiers, and smart home projects.

  • ✅ High-accuracy gas & air quality detection sensors
  • ✅ Compatible with Arduino, Raspberry Pi & ESP boards
  • ✅ Available for LPG, CO₂, CO, smoke & general air quality
  • ✅ Fast delivery across India with GST invoice

Explore Our Gas & Air Quality Sensor Range

We stock popular modules including MQ-series sensors (MQ-2, MQ-3, MQ-7, MQ-135), CCS811, and MH-Z19B CO₂ sensors. These sensors provide analog and digital outputs for integration with IoT platforms, safety alarms, and ventilation control systems.

Applications of Gas & Air Quality Sensors

Gas and air quality sensors are widely used in indoor air monitoring, industrial safety systems, environmental control, and IoT automation. They help detect harmful gases, track CO₂ levels, and maintain safe air quality standards in real time.

When you buy gas and air quality sensors online in India, you get authentic and calibrated modules from trusted suppliers — delivered quickly and supported by reliable customer service.

Frequently Asked Questions about Gas & Air Quality Sensors

Q: What types of gas sensors are available?

We offer MQ-series sensors (MQ-2, MQ-3, MQ-7, MQ-135), CCS811, and MH-Z19B modules for detecting gases such as LPG, methane, CO, CO₂, and air pollutants.

Q: Are these sensors suitable for Arduino and IoT projects?

Yes, most modules output analog or I2C signals, making them easy to interface with Arduino, ESP32, and Raspberry Pi boards.

Q: Can I buy single sensors?

Yes, individual sensors and bulk quantities are both available.

Q: Do you provide GST invoices?

Yes, all orders include a GST-compliant invoice from DNA Technology.

Q: What is the average shipping time?

In-stock products are typically shipped within 24 hours, with delivery across India in 2–5 working days.

Q: What if I can’t find a particular gas sensor model?

No worries — simply contact us with your gas type or range requirement, and we’ll help you find the right sensor or equivalent model.

Explore more environmental and safety sensors online in India — all genuine, quality-tested modules ready for fast delivery.



DFRobot Gravity: Electrochemical Oxygen / O2 Sensor (0-25%Vol, I2C)

DFRobot Gravity: Electrochemical Oxygen / O2 Sensor (0-25%Vol, I2C)

DFRobot Gravity: Electrochemical Oxygen / O2 Sensor (0-25%Vol, I2C)DFRobot O2 Sensor measures oxygen..

Rs.5,554.47 (inc GST)
Rs.4,707.18 + GST

SKU: 10350 | DAJ182
Stock: 1
DFRobot Fermion: Formaldehyde Sensor (Breakout, 0-3ppm MEMS HCHO Detection, Low Power)

DFRobot Fermion: Formaldehyde Sensor (Breakout, 0-3ppm MEMS HCHO Detection, Low Power)

DFRobot Fermion: Formaldehyde Sensor (Breakout, 0-3ppm MEMS HCHO Detection, Low Power)Fermion HCHO S..

Rs.605.00 (inc GST)
Rs.512.71 + GST

SKU: 10383 | DAJ215
Stock: 10
DFRobot Fermion: MEMS Smoke Detection Sensor - 10-1000ppm Range (Ethanol Compatible, Breakout)

DFRobot Fermion: MEMS Smoke Detection Sensor - 10-1000ppm Range (Ethanol Compatible, Breakout)

DFRobot Fermion: MEMS Smoke Detection Sensor - 10-1000ppm Range (Ethanol Compatible, Breakout)Ultra-..

Rs.539.00 (inc GST)
Rs.456.78 + GST

SKU: 10384 | DAJ216
Stock: 10
DFRobot Fermion: VOC Gas Sensor – Volatile Organic Compounds Detector (Breakout, 1-500ppm, MEMS)

DFRobot Fermion: VOC Gas Sensor – Volatile Organic Compounds Detector (Breakout, 1-500ppm, MEMS)

DFRobot Fermion: VOC Gas Sensor – Volatile Organic Compounds Detector (Breakout, 1-500ppm, MEMS) Fer..

Rs.504.00 (inc GST)
Rs.427.12 + GST

SKU: 10381 | DAJ213
Stock: 8
DFRobot Fermion: MEMS Ethanol Gas Sensor - Compact EtOH Detector (1-500ppm, Breakout)

DFRobot Fermion: MEMS Ethanol Gas Sensor - Compact EtOH Detector (1-500ppm, Breakout)

DFRobot Fermion: MEMS Ethanol Gas Sensor - Compact EtOH Detector (1-500ppm, Breakout) MEMS ethanol s..

Rs.504.00 (inc GST)
Rs.427.12 + GST

SKU: 10373 | DAJ205
Stock: 10
Winsen ZE03-O2 GAS Sensor Module

Winsen ZE03-O2 GAS Sensor Module

Winsen ZE03-O2 GAS Sensor ModuleElectrochemical GAS Detection Module ZE03-O2ZE03-O2 Gas sensor can b..

Rs.6,726.00 (inc GST)
Rs.5,700.00 + GST

SKU: 1759 | DAB098
Stock: 0
Winsen ZE03-NH3 GAS Sensor Module

Winsen ZE03-NH3 GAS Sensor Module

Winsen ZE03-NH3 GAS Sensor ModuleElectrochemical GAS Detection Module ZE03-NH3ZE03-NH3 Gas sensor ca..

Rs.10,736.82 (inc GST)
Rs.9,099.00 + GST

SKU: 1760 |
Stock: 0
Winsen ZE03-CL2 GAS Sensor Module

Winsen ZE03-CL2 GAS Sensor Module

Winsen ZE03-CL2 GAS Sensor ModuleElectrochemical Detection Module ZE03-CL2ZE03-CL2 Gas sensor can be..

Rs.10,854.82 (inc GST)
Rs.9,199.00 + GST

SKU: 1765 | DAG237
Stock: 0
MQ138 Formaldehyde Gas Detection Sensor Module

MQ138 Formaldehyde Gas Detection Sensor Module

MQ138 Formaldehyde Gas Detection Sensor ModuleMQ138 Sensor for formaldehyde detection, 1-10 ppm rang..

Rs.4,440.93 (inc GST)
Rs.3,763.50 + GST

SKU: 1822 | DAB105
Stock: 2
MQ3 Alcohol Gas Sensor Module

MQ3 Alcohol Gas Sensor Module

GAS MQ3 Alcohol Gas Sensor Module for MicrocontrollersMQ3 Alcohol Gas Sensor Module with digital out..

Rs.129.80 (inc GST)
Rs.110.00 + GST

SKU: 513 | DAB409
Stock: 5
MQ2 Smoke Flammable Gas Sensor Module

MQ2 Smoke Flammable Gas Sensor Module

MQ2 Smoke Flammable Gas Sensor ModuleMQ2 Smoke Sensor Module with analog and digital output, easy to..

Rs.124.61 (inc GST)
Rs.105.60 + GST

SKU: 514 | DAB408
Stock: 23
MQ7 CO Sensor Module

MQ7 CO Sensor Module

GAS MQ7 Carbon Monoxide Sensor ModuleMQ7 Gas Sensor Module for Carbon Monoxide detection with analog..

Rs.130.98 (inc GST)
Rs.111.00 + GST

SKU: 940 | DAB413
Stock: 5
MQ5 Gas Sensor Module

MQ5 Gas Sensor Module

MQ5 Gas Sensor ModuleMQ5 Gas Sensor Module for detecting Methane, LPG, and natural gas with analog a..

Rs.175.23 (inc GST)
Rs.148.50 + GST

SKU: 517 | DAB411
Stock: 15
MQ8 Hydrogen Gas Sensor Module for Detection

MQ8 Hydrogen Gas Sensor Module for Detection

MQ8 Hydrogen Gas Sensor Module for DetectionMQ8 Hydrogen Gas Sensor Module for H2 Alarm Detection wi..

Rs.174.64 (inc GST)
Rs.148.00 + GST

SKU: 1816 | DAB414
Stock: 5
MQ135 GAS SENSOR

MQ135 GAS SENSOR

MQ135 GAS SENSORMQ135 sensor detects NH3, NOx, alcohol, and more with high sensitivity for air quali..

Rs.127.58 (inc GST)
Rs.108.12 + GST

SKU: 183 | DAA448
Stock: 11
MQ7 CO SENSOR

MQ7 CO SENSOR

MQ7 CO GAS SensorMQ7 is a Carbon Monoxide (CO) sensor, suitable for sensing Carbon Monoxide concentr..

Rs.141.60 (inc GST)
Rs.120.00 + GST

SKU: 34 | DAA444
Stock: 21
MQ-8 Hydrogen Gas Sensor by Manufacturer

MQ-8 Hydrogen Gas Sensor by Manufacturer

MQ-8 Hydrogen Gas Sensor by ManufacturerMQ-8 sensor detects hydrogen gas with high sensitivity and a..

Rs.190.57 (inc GST)
Rs.161.50 + GST

SKU: 1815 | DAA450
Stock: 5
MQ9 Gas Sensor Module

MQ9 Gas Sensor Module

MQ9 Gas Sensor ModuleMQ9 sensor module for detecting LPG, CO, and CH4 with high sensitivity and fast..

Rs.195.82 (inc GST)
Rs.165.95 + GST

SKU: 1534 | DAB415
Stock: 0
Winsen ZE03-SO2 GAS Sensor Module

Winsen ZE03-SO2 GAS Sensor Module

Winsen ZE03-SO2 GAS Sensor ModuleElectrochemical Detection Module ZE03-SO2ZE03-SO2 Gas sensor can be..

Rs.13,216.00 (inc GST)
Rs.11,200.00 + GST

SKU: 1764 | DAB100
Stock: 2
 Winsen MQ138 VOC Gas Sensor

Winsen MQ138 VOC Gas Sensor

Winsen MQ138 VOC Gas SensorWinsen MQ138 sensor for IAQ monitoring, high sensitivity to VOCs, detect..

Rs.2,530.12 (inc GST)
Rs.2,144.17 + GST

SKU: 10415 | DAJ355
Stock: 0
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