All Products
Showing 1-20 of 60 products
Pololu Carrier for MQ Gas Sensors (Bare PCB Only)
This carrier board is designed to work with any of the MQ-series gas sensors, simplifying the interface from 6 to 3 pins—ground, power and analog voltage output—that are broken out with a 0.1" spacing, making the board compatible with 0.1" headers and standard breadboards and perfboards. This bo...
Methane Gas Sensor MQ-4
This semiconductor gas sensor detects the presence of methane (CNG) gas at concentrations from 300 ppm to 10,000 ppm, a range suitable for detecting gas leaks. The sensor’s simple analog voltage interface requires only one analog input pin from your microcontroller.
Gas Sensor Breakout
This breakout board provides a convenient PCB adapter for MQ-series gas sensors (MQ-3, MQ-4, MQ-6, MQ-7, and MQ-8). It converts the sensor's oversized, oddly-spaced pins into a standard breakout format that's easy to wire up to a microcontroller. Connect 5 V, ground, and a load resistor to an AD...
Carbon Monoxide Flammable Gas Sensor MQ-9
This semiconductor gas sensor detects the presence of Carbon Monoxide at concentrations from 10 to 1,000 ppm and combustible gas from 100 to 10,000 ppm. The sensor’s simple analog voltage interface requires only one analog input pin from your microcontroller.
Gravity: Arduino CO/Combustible Gas Sensor (MQ9)
The Gravity MQ-9 gas sensor detects carbon monoxide (CO) and combustible gases including methane and propane. It uses a semiconductor SnO2 sensing element that cycles between high and low temperatures — detecting CO at low temperature (1.5V) and combustible gases at high temperature (5.0V). With...
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...
Pololu Basic 2-Channel SPDT Relay Carrier with 5VDC Relays (Assembled)
The Pololu Basic 2-Channel SPDT Relay Carrier provides simple, independent control of two single-pole, double-throw (SPDT) relay switches from low-voltage, low-current control signals. This assembled version comes ready to use with relays, terminal blocks, and header pins pre-soldered. Each rela...
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...
Analog CO/Combustible Gas Sensor(MQ9)
The MQ-9 is an analog gas sensor module with high sensitivity to carbon monoxide (CO), methane, propane, and LPG. It uses an SnO2 sensing element that changes conductivity in the presence of target gases, making it suitable for both domestic and industrial gas leak detection. The sensor operates...
Methane CNG Gas Sensor - MQ-4
This is a simple-to-use compressed natural gas (CNG) sensor, suitable for sensing natural gas (composed of mostly Methane [CH4]) concentrations in the air. The MQ-4 can detect natural gas concentrations anywhere from 200 to 10000ppm. This sensor has a high sensitivity and fast response time. Th...
Pololu Carrier for Sharp GP2Y0D815Z0F, GP2Y0D810Z0F, and GP2Y0D805Z0F Sensors
This compact carrier board from Pololu makes it easy to integrate a Sharp GP2Y0D815Z0F, GP2Y0D810Z0F, or GP2Y0D805Z0F digital distance sensor into your project. It provides all the required external components, an on-board LED for visual feedback of the output state, and a clean 3-pin interface o...
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...
DIY Gas Detector - Learn to solder
MQ-2 Gas Sensor - Smoke & Flammable Gas Detector The MQ-2 is a reliable, easy-to-use gas sensor that’s ideal for detecting flammable gases like LPG, methane, propane, and even smoke. At its core is tin dioxide (SnO₂), a material with low conductivity in clean air. But when flammable gas is pres...
LPG Gas Sensor - MQ-6
A simple-to-use MQ-6 gas sensor for detecting liquefied petroleum gas (LPG) — primarily propane and butane — in the air. The sensor detects concentrations from 200 to 10,000 ppm with high sensitivity and fast response time. The MQ-6 outputs an analog resistance that varies with gas concentration...
ELECFREAKS PlanetX MQ5 Sensor
·
The ELECFREAKS PlanetX MQ5 Sensor is an essential sensor for environmental detection. The ELECFREAKS PlanetX MQ5 Sensor can be used to detect the leakage of flammable gas, you can use it to make a household gas leak alarm or a portable gas detector. PlanetX MQ5
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...
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...
Hydrogen Gas Sensor - MQ-8
This is a simple-to-use hydrogen gas sensor, suitable for sensing hydrogen concentrations in the air. The MQ-8 can detect hydrogen gas concentrations anywhere from 100-10000ppm. This sensor has a high sensitivity and fast response time. The sensor’s output is an analog resistance. The drive cir...
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...
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...
