Environmental (temperature, humidity, air quality)

This is a breakout version of BMP280 Barometric Pressure Sensor from DFRobot with temperature and pressure measurement functions, supporting Arduin...

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. I...

The MQ-131 is a low concentration Ozone gas sensor from Winsen. The sensing material for the MQ-131 is WO₃. It will have lower conductivity in clea...

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 ...

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 ...

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 (Sn...

A simple DC-powered air pump for inflatables and air-powered projects. Power it with ~4.5V (5V works fine) and it draws about 500mA, making it easy...

This simple dust sensor is a great way to add basic particulate sensing to your next project. It's not as fully featured as our PM2.5 I2C/UART-base...

Introducing the Auto-Digital Thermostat. The ADT6401 is a trip point temperature switch. Use the SPDT switches to set the temperature trip point an...

A PT100 is a Platinum RTD (Resistance Temperature Detector) with a resistance of 100Ω at 0°C which changes with temperature. It is suitable for app...

Panasonic's laser type PM sensor is an addition to its already broad range of specialty sensor solutions. It is comprised of an on-board microproce...

The Flirc Jeff Probe is an open-source in-application debugging tool for embedded microprocessors. It connects to your target via JTAG or Serial Wi...

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 ar...

The Octopus PM2.5 module from ElecFreaks is a laser-based particulate matter sensor built around the ZH03B dust sensor. It measures PM2.5 concentra...

CCS811 Air Quality Sensor can measure the eCO2 (equivalent CO2) and TVOC (Total Volatile Organic Compounds) density. It can be widely used in many ...

Octopus TMP36 Temperature Sensor Brick is a temperature sensor with low voltage and accurate celsius read. It can provide voltage output,which form...

The Octopus LM35 Analog Temperature Brick is a plug-and-play temperature sensor module based on the TI LM35D precision centigrade temperature senso...

F1031V Mass Air Flow Sensor adopts thermodynamic principle to detect flow rate of gas medium in the flow channel, with high precision and good repe...

Gravity: SHT31-F digital temperature and humidity sensor is based upon the Sensirion SHT31-F sensor IC. Thanks to Sensirion’s CMOSens® technology, ...

The Gravity IIC Ozone Sensor measures ozone (O₃) concentration from 0 to 10 ppm with 10 ppb resolution using an electrochemical sensing element. Fa...

The Adafruit TMP235 is a plug-and-play analog temperature sensor with a 3-pin JST PH (STEMMA) connector. Unlike I2C sensors, this one outputs a sim...

The Adafruit Sensirion SHTC3 is a compact temperature and humidity sensor with a true I2C interface, offering ±2% relative humidity and ±0.2 °C tem...

The PMSA003I is a compact particulate matter sensor that measures PM1.0, PM2.5, and PM10.0 concentrations using laser scattering. Unlike most PM se...

The Adafruit AHT20 is an affordable I2C temperature and humidity sensor from the makers of the popular DHT22. It delivers reliable readings with st...