Environmental (temperature, humidity, air quality)

SKU: AF-4636 | Brand: Adafruit

The Adafruit Sensirion SHTC3 is a compact temperature and humidity sensor with a true I2C interface, offering ±2% relative humidity and ±0.2 °C temperature accuracy. It's a cost-effective option from Sensirion's range...

SKU: DF-SEN0130 | Brand: DFRobot

The Gravity MQ5 gas sensor is highly sensitive to LPG, natural gas, and town gas, with lower sensitivity to alcohol, cooking fumes, and cigarette smoke. The analogue output is proportional to gas concentration, and se...

SKU: SF-SEN-09570 | Brand: SparkFun

Melexis' MLX90614ESF-BAA is an infrared thermometer designed for non-contact temperature sensing. An internal 17-bit ADC and a powerful DSP contribute to the MLX90614’s high accuracy and resolution. It has a huge numb...

SKU: SF-SEN-23715 | Brand: SparkFun

The SEN55 environmental node is a straightforward, all-in-one sensor solution platform for the accurate measurement of various environmental parameters, such as particulate matter, volatile organic compounds (VOCs), o...

SKU: DF-SEN0537 | Brand: DFRobot

The ENS160 Air Quality Sensor uses ScioSense's ENS160 chip with TrueVOC and metal oxide (MOX) technology to monitor indoor air quality. It outputs TVOC (total volatile organic compounds), eCO2 (equivalent CO2), and AQ...

SKU: DF-SEN0514 | Brand: DFRobot

This Gravity: ENS160 Air Quality Sensor, based on ScioSense's new ENS160 sensor chip, is specifically designed for indoor air quality monitoring and offers detection of multiple IAQ data (TVOC, eCO2, AQI).The innovati...

SKU: DF-SEN0466 | Brand: DFRobot

This is a sensor that detects carbon monoxide and supports three output modes: analog, I2C, and UART. The probe has been calibrated at the factory, which can quickly and accurately measure the concentration of carbon ...

SKU: AF-4375 | Brand: Adafruit

A simple I2C temperature sensor in a breadboard-friendly TO-220 package. The TC74A0 provides basic temperature readings with ±2°C accuracy — a straightforward choice when you need easy temperature logging or monitorin...

SKU: AF-4832 | Brand: Adafruit

The Adafruit HTU31 is a third-generation I²C temperature and humidity sensor from TE, offering improved accuracy and useful extras over its predecessor, the HTU21D. With typical humidity accuracy of ±2% (at 20–100% RH...

SKU: DF-SEN0460 | Brand: DFRobot

The Gravity PM2.5 Air Quality Sensor uses laser scattering to measure suspended particulate matter in three size ranges — PM1.0, PM2.5, and PM10 — and outputs concentration data via I2C. With a minimum detectable part...

SKU: DF-SEN0394 | Brand: DFRobot

The Gravity SGP40 Air Quality Sensor uses Sensirion's SGP40 digital VOC sensor chip with built-in temperature and humidity compensation. It outputs a VOC index (0–500) that can be used directly to evaluate indoor air ...

SKU: DF-SEN0376 | Brand: DFRobot

This is an Arduino compatible alcohol sensor module from DFRobot with a 0-5ppm measuring range, supporting I2C and UART outputs. Aiming at fast and accurate detection of alcohol gas concentration in the air,...

SKU: DF-SEN0372 | Brand: DFRobot

This is a breakout version of BMP280 Barometric Pressure Sensor from DFRobot with temperature and pressure measurement functions, supporting Arduino code control.Housed in an extremely compact package, the BMP280 is b...

SKU: DF-SEN0334 | Brand: DFRobot

Gravity: SHT31-F digital temperature and humidity sensor is based upon the Sensirion SHT31-F sensor IC. Thanks to Sensirion’s CMOSens® technology, highly integrated capacitive humidity sensing components and band-gap ...

SKU: AF-4566 | Brand: Adafruit

The Adafruit AHT20 is an affordable I2C temperature and humidity sensor from the makers of the popular DHT22. It delivers reliable readings with standard I2C communication, making it easy to use with any Arduino, Rasp...

SKU: EF-EF04060 | Brand: ElecFreaks

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 ...

SKU: DF-SEN0263 | Brand: DFRobot

We can divide temperature measurement in to two types: contact and non-contact. Contact measurement can only accurately measure temperature when the testing object and the sensor reach thermal equilibrium. This ca...

SKU: AF-3660 | Brand: Adafruit

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...

SKU: TB-RN3444 | Brand: Little Bird

A 100 kΩ NTC (Negative Temperature Coefficient) thermistor in a radial dipped-epoxy package. These ceramic sensors change resistance rapidly with temperature, making them ideal for temperature measurement, compensatio...

SKU: AF-1782 | Brand: Adafruit

This I2C digital temperature sensor is one of the more accurate/precise we've ever seen, with a typical accuracy of ±0.25°C over the sensor's -40°C to +125°C range and precision of +0.0625°C. They work great with any ...