Environmental (temperature, humidity, air quality)

This is the Stainless Steel Temperature Probe, a tough little Vernier Sensor that can be used to measure the temperature of organic liquids and eve...

Put a temperature meter anywhere with this very handy display. This panel meter displays the temperature of the attached waterproof 1% thermistor i...

This pressure sensor from Freescale is a great low-cost sensing solution for precision measurement of barometric pressure and altitude. The MPL3...

This piezo igniter can be used for all sorts of applications where you need a spark to make fun things happen. With a large red button, easy mounti...

It's summer and you're sweating and your hair's all frizzy and all you really want to know is why the weatherman said this morning that today's ...

The RHT03 (also known by DHT-22) is a low cost humidity and temperature sensor with a single wire digital interface. The sensor is calibrated and d...

Thermoelectric coolers (TEC or Peltier) create a temperature differential on each side. One side gets hot and the other side gets cool. Therefore, ...

What sensor should you use when you need to measure temperature? Most people will think of a DS18B20 temperature sensor first, but this senso...

Quantify the world! The Sensor Kit from Particle is a curated mix of awesome sensors and electrical components specifically selected by the engi...

Unlike most of the other temperature sensors we have, this breakout has a really cool IR sensor from TI that can measure the temperature of an o...

This is a 6-pin 1.5mm pitch connector which mates directly with the connector on the Sharp GP2Y1010AU0F optical dust sensor. This is a ZH series...

Sharp’s GP2Y1010AU0F is an optical air quality sensor, designed to sense dust particles. An infrared emitting diode and a phototransistor are di...

This is a breakout board for Honeywell’s HIH-4030 humidity sensor. The HIH-4030 measures relative humidity (%RH) and delivers it as an analog outpu...

DFRobot released its latest wide range Arduino infrared CO2 sensor, which effective range is up to 0~50000ppm. This sensor is based on non-di...

This is a simple-to-use liquefied petroleum gas (LPG) sensor, suitable for sensing LPG (composed of mostly propane and butane) concentrations in...

This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air. The MQ-7 can detect CO-gas concentrations a...

NOTE: THIS SOLDERING IRON IS HAS A US PLUG AND IS NOT COMPATIBLE WITH AUSTRALIAN POWER OUTLETS. This compact but 50W-powerful stationary sold...

*sniff* *sniff* ... do you smell that? No need to stick your nose into a carton of milk anymore, you can build a digital nose with the ENS160 Gas S...

Take a deep breath in...now slowly breathe out. Mmm isn't it wonderful? All that air around us, which we bring into our lungs, extracts oxygen from...