Environmental (temperature, humidity, air quality)

SKU: SF-SEN-10988 | Brand: SparkFun

This is the same temperature sensor that is included in our SparkFun Inventor’s Kit. The TMP36 is a low voltage, precision centigrade temperature sensor. It provides a voltage output that is linearly proportional to t...

SKU: LB-LR0029 | Brand: Little Bird

DHT11 Temperature and Humidity sensor is as powerful as it used to be but easier to use.  This  DHT11 Arduino temperature and humidity sensor has a full range temperature compensation, low power consumption...

SKU: LB-24-TEMP | Brand: Little Bird

A pre-wired DS18B20 digital temperature sensor on a breakout module with three labelled pins for easy connection. The DS18B20 uses the 1-Wire protocol, requiring only a single data line to communicate temperature read...

SKU: AF-165 | Brand: Adafruit

The TMP36 is a low-power analog temperature sensor that outputs a voltage proportional to ambient temperature. It operates on 2.7–5.5V and requires no external calibration — simply read the analog voltage and convert ...

SKU: AF-3263 | Brand: Adafruit

The Adafruit Universal Thermocouple Amplifier MAX31856 Breakout reads temperature from virtually any thermocouple type — K, J, N, R, S, T, E, or B — with 0.0078125°C resolution and a measurement range of -210°C to +18...

SKU: AF-269 | Brand: Adafruit

The MAX31855 Thermocouple Amplifier Breakout converts K-type thermocouple readings into digital data via SPI, handling cold-junction compensation automatically. It measures temperatures from −200°C to +1350°C in 0.25°...

SKU: AF-4632 | Brand: Adafruit

The Adafruit PMSA003I Air Quality Breakout is a compact laser-scattering particulate matter sensor with an I2C interface — a significant advantage over the UART-based sensors that dominate this category. Simply connec...

SKU: AF-3966 | Brand: Adafruit

The BMP388 from Bosch is a high-precision barometric pressure and temperature sensor, offering significantly improved altitude accuracy over the BMP280. With altitude noise as low as 0.1 metres and a relative accuracy...

SKU: DF-SEN0572 | Brand: DFRobot

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 a...

SKU: AF-3965 | Brand: Adafruit

The Adafruit MPRLS Ported Pressure Sensor Breakout measures absolute air pressure from 0 to 25 PSI (0–172 kPa) via a stainless steel port. Unlike typical barometric sensors, the metal port lets you attach tubing to me...

SKU: AF-5181 | Brand: Adafruit

The AM2301B is an affordable enclosed temperature and humidity sensor featuring an I2C interface — a modern upgrade over the classic DHT22/AM2302 sensors that required bit-bang timing protocols. Inside is the proven A...

SKU: AF-4494 | Brand: Adafruit

The Adafruit DPS310 is a high-precision barometric pressure and altitude sensor from Infineon, mounted on a breakout board with STEMMA QT / Qwiic connectors for solderless I2C wiring. It delivers ±1 hPa absolute accur...

SKU: AF-2857 | Brand: Adafruit

The Adafruit Sensirion SHT31-D is a high-accuracy temperature and humidity sensor with a true I2C interface and PTFE filter for protection against dust and contaminants. Part of Sensirion's third-generation SHT sensor...

SKU: SF-SEN-20844 | Brand: SparkFun

The SparkFun ENS160 Indoor Air Quality Sensor is a digital multi-gas sensor solution with four sensor elements that can be used in a wide range of applications including building automation, smart home, and HVAC. The ...

SKU: SF-SEN-15440 | Brand: SparkFun

The BME280 Atmospheric Sensor Breakout measures barometric pressure, relative humidity, and temperature from a single compact board. With both Qwiic (I2C) and 0.1″ header connections, it integrates easily into Arduino...

SKU: LB-LR0205 | Brand: Little Bird

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 a...

SKU: SF-SEN-22956 | Brand: SparkFun

The SparkFun Photoacoustic Spectroscopy CO2 Sensor features the Infineon XENSIV PAS CO2 (PASCO2V01) sensor, which delivers highly accurate CO2 measurements in direct parts-per-million (ppm) format. The photoacoustic s...

SKU: SF-SEN-19096 | Brand: SparkFun

The SparkFun BME688 Environmental Sensor is a breakout that combines a gas scanning sensor with temperature, humidity, and barometric pressure sensing for a complete environmental sensor in a single package. The ga...

SKU: AF-4821 | Brand: Adafruit

The Adafruit TMP117 is a high-accuracy I2C temperature sensor from Texas Instruments, offering 16-bit resolution (0.0078°C) and up to ±0.1°C accuracy across the most common temperature ranges. It's ideal for applicati...

SKU: AF-4829 | Brand: Adafruit

The Adafruit SGP40 is a next-generation MOX (metal-oxide) gas sensor from Sensirion for indoor air quality monitoring. Unlike its predecessor the SGP30, the SGP40 outputs a raw signal that is processed through Sensiri...