All Products
Showing 21-40 of 61 products
Fermion: MEMS Hydrogen H2 Gas Detection Sensor (Breakout, 0.1-1000ppm)
The Fermion MEMS H2 Sensor is a compact hydrogen gas detection module using micro-electromechanical system (MEMS) technology. It provides qualitative measurement of hydrogen concentration from 0.1 to 1000 ppm via an analogue voltage output, with low power consumption, fast response, and a short p...
Sensor ELECFREAKS PlanetX MQ3
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An alcohol vapour sensor module from the ELECFREAKS PlanetX range, designed for use with micro:bit via an RJ11 connector. The MQ3 sensor uses a tin dioxide (SnO2) sensing element whose conductivity increases with alcohol gas concentration, providing an analog output you can read and process in Ma...
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...
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 Sensor (MQ7)
The MQ7 is a simple-to-use Carbon Monoxide (CO) sensor suitable for detecting CO concentrations in the air. It offers a wide detection range from 20 to 2000 ppm, making it ideal for safety monitoring and air quality projects. The sensor outputs an analog resistance that varies with CO concentrat...
SparkFun DataLogger IoT
The SparkFun DataLogger IoT is a data logger that comes preprogrammed to automatically log GPS and various pressure, humidity, and distance sensors. All without writing a single line of code! The DataLogger automatically detects, configures, and logs Qwiic sensors. It was specifically designed fo...
Alcohol sensor for Arduino
An alcohol sensor module for Arduino with both digital (TTL) and analog output. It detects alcohol vapour in the 10–1000 PPM range, with analog output voltage increasing proportionally with concentration. The module also responds to LPG, natural gas, city gas, and smoke. The board features a pow...
Gravity: IIC Ozone Sensor (0-10ppm)
The Gravity IIC Ozone Sensor measures ozone (O₃) concentration from 0 to 10 ppm with 10 ppb resolution using an electrochemical sensing element. Factory-calibrated for accurate readings out of the box, it connects via I2C through DFRobot's Gravity 4-pin interface. Compatible with Arduino, ESP32,...
Enviro Indoor (Pico W Aboard) with Accessory Kit
A wireless environmental monitoring board to keep track of inside conditions in your home, office or other habitat. Onboard sensors can measure temperature, humidity, pressure, gas and light. The top of the range BME688 sensor on Enviro Indoor can measure temperature/humidity/pressure with a...
DFRobot SEN0659 Industrial RS485 NDIR CO2 Sensor - 400-5000ppm
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This industrial CO2 probe is built for reliable carbon dioxide monitoring in environments such as indoor air quality systems, pipelines, greenhouses and fresh air systems. It uses NDIR sensing to measure CO2 from 400 to 5000 PPM and supports manual calibration for dependable readings.The IP65-rat...
Adafruit SCD-43 True CO2, Temperature & Humidity Sensor
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This compact breakout measures true ambient CO2 concentration using photoacoustic sensor technology, rather than estimating CO2 from VOC gas concentration. It reports CO2 in parts per million and also includes integrated temperature and humidity sensing, making it useful for indoor air quality, v...
Gravity: STCC4 True Carbon Dioxide (CO2) Sensor (3-in-1 Air Quality Monitoring, 400 ~ 5000ppm)
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This Gravity air quality module uses Sensirion’s STCC4 gas sensing chip to directly measure carbon dioxide with the thermal conductivity measurement principle. It is designed for compact, cost-effective indoor monitoring nodes where stable CO₂ readings are needed without complex hardware integrat...
Alcohol Gas Sensor - MQ-3
The MQ-3 is an alcohol gas sensor suitable for detecting alcohol concentration in the air, similar to a breathalyser. It provides an analog resistive output based on alcohol concentration, with high sensitivity and fast response time. The drive circuit is simple — just one resistor is needed, and...
Gravity: I2C BME680 Environmental Sensor (VOC, Temperature, Humidity, Barometer)
DFRobot BME680 Environmental Sensor is a low power gas, pressure, temperature & humidity sensor based on BOSCH BME680 sensor. It is a 4-in-1 multi-functional MEMS environmental sensor which integrates VOC (Volatile Organic Compounds) sensor, temperature sensor, humidity sensor and barometer. ...
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...
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...
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: BME688 AI Environmental Sensor (VOC, Temperature, Humidity, Pressure)
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The BME688 AI Environmental Sensor is a highly advanced MEMS sensor that combines temperature, humidity, barometric pressure, and VOC detection in a single, compact package. Featuring ±0.5°C temperature accuracy, ±3% humidity accuracy, and ±0.6 hPa pressure accuracy, it offers reliable env...
Adafruit ENS160 MOX Gas Sensor - Sciosense CCS811 Upgrade
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The Adafruit ENS160 is a fully integrated metal-oxide (MOX) gas sensor from ScioSense, designed as a drop-in upgrade for the now-discontinued CCS811. It combines multiple MOX sensing and heating elements on a single chip to provide detailed air quality readings including TVOC (Total Volatile Orga...
