Gas Sensor
Gas sensors, also known as gas detectors or gas leak detectors, are critical electronic components used to detect toxic, combustible, or hazardous gases and measure gas concentrations in various environments. These sensors are essential for safety, air quality monitoring, and industrial automation.
Our collection includes a broad range of high-performance gas sensors, including the popular MQ series:
- MQ-2 – Methane, Butane, LPG, Smoke
- MQ-3 – Alcohol, Ethanol, Smoke
- MQ-4 – Methane, CNG Gas
- MQ-5 – Natural Gas, LPG
- MQ-6 – LPG, Butane
- MQ-7 – Carbon Monoxide
- MQ-8 – Hydrogen Gas
- MQ-9 – Carbon Monoxide, Flammable Gases
- MQ131 – Ozone
- MQ135 – Air Quality (CO, Ammonia, Benzene, Alcohol, Smoke)
- MQ136 – Hydrogen Sulfide
- MQ137 – Ammonia
- MQ138 – Benzene, Alcohol, Propane, Formaldehyde, Hydrogen
- MQ214 – Methane, Natural Gas
We feature gas sensors from top global brands, including:
DFROBOT, WINSEN, ASAIR, ACEBOTT, SHARP MICROELECTRONICS, AOSONG, SHARP, RENESAS, PLANTOWER, SENSIRION, INFINEON, MEMSFRONTIER, MASTECH, SEEED STUDIO, FIGARO, MIKROE, PIMORONI, ADAFRUIT, and WAVESHARE.
Whether you’re working on prototyping, air purification systems, or smart industrial controls, our gas sensors offer precision, durability, and peace of mind.
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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MH-Z19 infrared CO2 sensor for CO2 monitor with pin
Olimex
$38.50Features: CATEGORY SPECIFICATIONS Product Type- SKU:
- PEWMZ16
$38.50 -
MP135 Air Pollution Level Meter Gas Sensor
Dikavs
$3.47MP135 is generally preferred to measure the amount of gases such as ammonia and nitrogen in the environment. Thanks to the Al2O3 (Aluminum oxide) technology, MP135 has made the reaction time very...- SKU:
- PEDAD58
$3.47 -
MQ-214 Methane Sensor Combustible Gas Sensor
Dikavs
$3.47MQ - 214 is a Methane (CH4) gas sensor detects the concentrations of methane in the air and outputs its reading as an analog voltage. Wide detecting scope. Fast response and High sensitivity. Stable...- SKU:
- PEDAD57
$3.47 -
MQ137 Ammonia Gas Sensor
Dikavs
$13.86Sensitive material of MQ137 gas sensor is SnO2, which with lower conductivity in clean air. When NH3 gas exists, the sensor’s conductivity gets higher along with the gas concentration rising. Users...- SKU:
- PEDAD56
$13.86 -
MQ-136 Hydrogen Sulfide Gas Detection Sensor
Dikavs
$13.86Sensitive material of MQ136 gas sensor is SnO2, which with lower conductivity in clean air. When H2S gas exists, the sensor’s conductivity gets higher along with the gas concentration rising. Users...- SKU:
- PEDAD55
$13.86 -
MQ131 Ozone Gas Sensor High Concentration 10~1000ppm
Dikavs
$11.55Ozone sensors are specifically designed to detect ground-level ozone, a harmful pollutant that can irritate the respiratory system. The MQ131 gas sensor employs a semiconductor metallic oxide as its...- SKU:
- PEDAD54
$11.55 -
MQ-8 Hydrogen Gas Sensor
Dikavs
$1.93MQ-8 Working voltage: 5V DC Features: Microprocessor compatible TTL output. Analogue output. The output voltage changes proportionally to the gas concentration in the air. High precision. It...- SKU:
- PEDAD53
$1.93 -
MQ-2 LPG, Propane and Hydrogen Measuring Sensor
Dikavs
$1.93MQ-2 Working voltage: 5V DC Features: Microprocessor compatible TTL output. Analogue output. The output voltage changes proportionally to the gas concentration in the air. High precision. It...- SKU:
- PEDAD52
$1.93 -
MQ-135 Air Quality Sensor
Dikavs
$1.93MQ-135 Working voltage: 5V DC Features: Microprocessor compatible TTL output. Analogue output. The output voltage changes proportionally to the gas concentration in the air. High precision. It...- SKU:
- PEDAD51
$1.93 -
MQ Series Sensors 7 -Pin Universal
Dikavs
$0.77Features: CATEGORY SPECIFICATIONS Product Type- SKU:
- PEDAD50
$0.77 -
SGP41 Air 5V Measurement TVOC/eCO2 Formaldehyde Carbon Dioxide Detector Gas Sensor
Olimex
$11.55SGP4 is a VOC (volatile organic compounds) and NOx (nitrogen oxides) sensor designed as a digital intelligent switch and regulating unit that can be applied to air treatment equipment such as...- SKU:
- PECMG53
$11.55 -
ACEBOTT MQ-4 Gas Sensor/Natural Gas Compatible with Arduino
ACEBOTT
$3.85ACEBOTT MQ-4 Gas Sensor/Natural is a combustible gas sensor, which can detect the concentration of combustible gas in the environment. Its working principle is based on the change of electrical...- SKU:
- QB084
$3.85 -
SCD41 Gas Sensor CO2 Carbon Dioxide Temperature and Humidity
diymore
$30.80The SCD41 Gas Sensor Module is a highly advanced sensor designed to detect CO₂ (carbon dioxide) levels, temperature, and humidity with exceptional accuracy and reliability. Built on Sensirion's...- SKU:
- PEUYT44E
$30.80 -
MP-2 MP503 Smoke detection Sensor Module
Olimex
$5.78Features: CATEGORY SPECIFICATIONS P- SKU:
- PEMSV94
$5.78 -
MP-4 MP503 Combustible Gas Sensor Module
Olimex
$5.78Features: CATEGORY SPECIFICATIONS Prod- SKU:
- PEMSV92
$5.78 -
MQ-131 ozone gas sensor Module
Olimex
$25.03Features: CATEGORY SPECIFICATIONS Product Type- SKU:
- PEOSO82
$25.03 -
TGS822 alcohol gas sensor
Olimex
$14.63Features: CATEGORY SPECIFICATIONS Product Type General Purpose Gas S- SKU:
- PEDDF48
$14.63 -
MQ-137 NH3 Ammonia Gas Sensor
Olimex
$26.95Features: CATEGORY SPECIFICATIONS Product Ty- SKU:
- PESLF99
$26.95 -
MQ-136 Hydrogen Sulfide Gas Sensor
Olimex
$26.95Features: CATEGORY SPECIFICATIONS Product Ty- SKU:
- PESLF98
$26.95 -
MP-135 MP503 air quality detection gas sensor
Olimex
$5.78MP135 gas sensor is for air quality. It adopts multilayer thick film manufacturing technology. The heater and metal oxide semiconductor material on the ceramic substrate of subminiature Al2O3 are...- SKU:
- PEDDF49
$5.78 -
SOLD OUT
MH-Z14A CO2 Carbon Dioxide Sensor
Olimex
$30.80Features: CATEGORY SPECIFICATIONS Product Type- SKU:
- PEDER48
$30.80 -
MQ Series Sensors 6 -Pin Universal
Dikavs
$0.62Features: CATEGORY SPECIFICATIONS Product Type- SKU:
- PEDAD49
$0.62 -
MS-1100 Formaldehyde Benzene Gas Sensor
Olimex
$11.55Features: CATEGORY SPECIFICATIONS Product Type Air Quality / Volatile Organic Compound (VOC) Gas Sensor- SKU:
- PEGPS25
$11.55 -
ZE08-CH2O Formaldehyde sensor
Olimex
$23.10Features: CATEGORY SPECIFICATIONS Product Type- SKU:
- PEFSS62
$23.10 -
SOLD OUT
F08406 MG811 CO2 Carbon Dioxide Sensor
Olimex
$38.50Features: CATEGORY SPECIFICATIONS Product Type- SKU:
- PEFOR25
$38.50 -
MH-Z19 infrared CO2 sensor for CO2 monitor
Olimex
$38.50Features: CATEGORY SPECIFICATIONS Product Type- SKU:
- PEWMZ15
$38.50 -
$2.31 -
MQ-131 ozone gas sensor
Olimex
$24.64Features: CATEGORY SPECIFICATIONS Product Type Ozone Ga- SKU:
- PEOSO88
$24.64 -
$2.31 -
$2.31 -
$2.31 -
MQ-3 Alcohol Ethanol Sensor
Olimex
$2.31Features: CATEGORY SPECIFICATIONS Product Type Alcohol / Ethanol Gas- SKU:
- PEMQD23
$2.31 -
MQ-5 LPG, natural gas, coal gas Sensor
Olimex
$2.31Features : CATEGORY SPECIFICATIONS Product T- SKU:
- PEMNS45
$2.31 -
MQ-9 Liquefied Methane Gas Sensor
Olimex
$3.08Features: CATEGORY SPECIFICATIONS Product Type Carbon Monoxide (CO) & Combustible Gas Sensor Module- SKU:
- PESLF45
$3.08
MQ-7 Carbon Monoxide Gas Sensor
Olimex
$3.08Features: CATEGORY SPECIFICATIONS Product Ty- SKU:
- PECMG52
$3.08