All Products
Showing 21-40 of 91 products · 9 unavailable products hidden
Alcohol Gas Sensor MQ-3
The MQ-3 is a semiconductor gas sensor that detects alcohol vapour at concentrations from 0.04 mg/L to 4 mg/L — a range suitable for building a breathalyser. It provides a simple analog voltage output that requires only one analog input pin from your microcontroller. Key Features Alcohol Detec...
Adafruit BME680 - Temperature, Humidity, Pressure and Gas Sensor
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The BME680 from Bosch delivers comprehensive environmental sensing in a single compact package. This precision sensor measures temperature, humidity, barometric pressure, and VOC gas levels, all accessible over I2C or SPI. In addition to standard environmental readings, the BME680 includes a sma...
Octopus MG811 CO2 Gas Sensor
Octopus MG811 CO2 Gas Sensor is a CO2 electronic brick in our OCTOPUS series, the basic design for the outlook, PCB fixing holes and connections are the same with them.The higher the CO2 concentration is, the lower the output voltage would be. The users can read the CO2 value easily after checkin...
Ammonia Gas Sensor - MQ-137
The MQ-137 is an ammonia (NH3) gas sensor from Winsen, designed to detect ammonia concentrations in the air. The sensing element is tin dioxide (SnO2), which has lower conductivity in clean air and increases in conductivity as ammonia gas concentration rises. A simple voltage divider circuit can...
Hydrogen Sulfide Gas Sensor - MQ-136
The MQ-136 is a Hydrogen Sulfide detection sensor with a sensing range of 1 - 200ppm. The sensing element is SnO2, which has lower conductivity in clean air. When H₂S gas exists, the sensor’s conductivity gets higher along with the gas concentration rising. A simple circuit makes measuring this c...
AGS02MA TVOC Gas Sensor
The AGS02MA is a MEMS-based TVOC (Total Volatile Organic Compounds) gas sensor with a calibrated digital signal output. It detects a range of polluting gases including ethanol, ammonia, sulfides, benzene vapours, and smoke, making it suitable for air quality monitoring applications. This sensor ...
Fermion: MEMS Gas Sensor - MiCS-2714 (Breakout)
This is a hydrogen and nitrogen oxide gas concentration sensor launched by DFRobot. The sensor uses MEMS technology to support gas concentration detection of NO, NO2 and H2. The matching sample code integrates the concentration conversion formula of various gas to facilitate the testing and use ...
Adafruit BME688 - Temperature, Humidity, Pressure and Gas Sensor
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The BME688 from Bosch delivers comprehensive environmental sensing in a single compact package. This precision sensor measures temperature, humidity, barometric pressure, and VOC gas levels, all accessible over I2C or SPI. The BME688 is a drop-in replacement for the BME680, adding a programmable...
Fermion: MEMS Gas Sensor - MiCS-5524 (Breakout)
A compact MEMS gas sensor breakout based on the MiCS-5524, capable of detecting concentrations of multiple gases including carbon monoxide (CO), methane (CH4), ethanol (C2H5OH), propane (C3H8), butane (C4H10), hydrogen (H2), hydrogen sulfide (H2S), and ammonia (NH3). The breakout provides analog...
AGS02MA I2C TVOC Gas Sensor
The AGS02MA is a compact MOX-based TVOC (Total Volatile Organic Compounds) gas sensor with an I2C interface. It features a built-in ADC that outputs gas resistance and parts-per-billion (ppb) readings — higher ppb values indicate more organic compounds in the air. This is a simple, inexpensive s...
TVOC Gas Sensor – High Sensitivity, Long Lifespan, Low Power
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TVOC Gas Sensor: Your Sentinel for Air PurityBreathe easier and stay assured of the air quality around you with our advanced TVOC (Total Volatile Organic Compounds) Gas Sensor. Designed for seamless integration into air treatment systems and quality monitors, this compact yet powerful sensor is t...
Gravity: Formaldehyde (HCHO) Sensor (Arduino Raspberry Pi Compatible)
The Formaldehyde (HCHO) sensor is an Arduino & Raspberry Pi compatible module, which is the ideal solution for indoor air quality monitor. This is a HCHO(CH2O) sensor module. It can be used to measure HCHO in air. Through it, you can know the air quality. This sensor module is widely used ...
Gravity: Arduino Alcohol Sensor (MQ3)
An analogue alcohol gas sensor based on the MQ-3 probe, designed for use with Arduino and other microcontrollers. The sensor outputs a voltage proportional to the concentration of alcohol vapour in the surrounding air, making it suitable for breathalyser-style projects, air quality monitoring, an...
Adafruit SGP30 Air Quality Sensor Breakout - VOC and eCO2
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The Adafruit SGP30 is a multi-pixel MOX (metal-oxide) gas sensor from Sensirion that measures Total Volatile Organic Compounds (TVOC) and equivalent CO2 (eCO2) for indoor air quality monitoring. With fully calibrated output signals and I2C interfacing, it provides a straightforward way to detect ...
Octopus Smoke Sensor MQ-2 Brick OBMQ2
An analogue gas sensor module based on the MQ-2 sensor, part of the Octopus Electronic Bricks series for plug-and-play integration with Arduino and compatible boards. Detects a wide range of combustible gases and smoke with high sensitivity and fast response time. Detectable Gases LPG, i-butane...
Octopus MQ3 Alcohol Sensor Brick
The Octopus MQ3 Alcohol Sensor Brick from ElecFreaks is an analogue gas sensor module with high sensitivity to alcohol vapour. It outputs an analogue voltage proportional to the detected alcohol concentration, making it straightforward to interface with Arduino and other microcontrollers. The MQ...
Sensor Projects with Raspberry Pi : Internet of Things and Digital Image Processing
A hands-on guide to building IoT and image processing projects with the Raspberry Pi. Starting with simple sensor circuits, the book progressively introduces cloud connectivity, real-time alerts, and computer vision — providing practical skills applicable to mobile development and electrical engi...
SparkFun Environmental Sensor Breakout - BME680 (Qwiic)
A complete environmental sensor breakout based on the Bosch BME680, combining gas sensing (VOC), temperature, humidity, and barometric pressure in a compact 25.4 × 25.4mm (1" × 1") board. The gas sensor detects a wide variety of volatile organic compounds for indoor air quality monitoring. Commu...
Smoke Sensor - MQ-2
The MQ-2 is a smoke and combustible gas sensor manufactured by Winsen. It detects flammable gases and smoke in a concentration range of 300–10,000 ppm, with particularly high sensitivity to propane and smoke. It's widely used in domestic gas leakage alarms and portable gas detectors. The sensing...
Dual Gas CO and CH4 Detection Sensor - MQ-9B
The MQ-9B is a CO and CH₄ gas detection sensor form Winsen. The sensing material of the MQ-9B is SnO2, which has a low conductivity in clean air. It detects carbon monoxide (1.5V) by method of cycling high and low temperature. The sensor’s conductivity gets higher with the CO and CH₄ gas concentr...
