Hello and Welcome! If you have a technical question please check out our Forums. If you have an order or shipping question please refer to our Customer Support page. Please see all COVID-19 updates here and thank you for your continued support.

Find a Retailer
Need Help?

Customer Service

Track My Order

Frequently Asked Questions

International Shipping Info

Send Email

Mon-Fri, 9am to 12pm and
1pm to 5pm U.S. Mountain Time:

(303) 284-0979

Chat With Us

Shop
Learn
Blog
Support

Shopping Cart 0 items

Shop
Learn
Blog
Support

Today's Deals
Education
Forum

Today's Deals Desktop Site Education

All Categories

Featured

New Products
Top Sellers
Sale
Gift Certificates

Brands

SparkFun
Arduino
Raspberry Pi
Qwiic
micro:bit
all brands

Development

Single Board Comp.
Microcontrollers
Machine Learning
FPGA
Prototyping Boards
all development

Sensors

Movement
Biometrics
Imaging
Environment
Capacitive
all sensors

Tools

3D Printing
CNC
Soldering
Hand Tools
Instruments
all tools

Miscellaneous

All Kits
Books
Arts/Crafts Supplies
SD Cards
Swag
all misc

Components

LED & Illumination
Buttons & Switches
LCDs & OLEDs
Power
Cables & Wire
all components

E-Textiles

LilyPad
Sewable Electronics
Materials
E-Textile Power
E-Textile Kits
all e-textiles

Robotics

Actobotics
Motors & Drivers
Parts
Hardware
Robotics Kits
all robotics

Wireless & IoT

Bluetooth
WiFi
Satellite
GPS & GNSS
Wireless Kits
all wireless/IoT

Audio

Audio Boards
Audio Cables
Speakers
Audio Chips
all audio

Home
Product Categories
Sensors
Environment (114 products)

Filter and sort

Sort by:

Most Popular
Highest Price
Lowest Price
Alphabetical
Highest Reviewed
Newest
Oldest

Subcategory:

Magneto
Pressure
Seismograph
Sound
Temperature
Weather

Refine by:

SparkFun Original
On sale
In stock

Customer reviews:

5 stars
4 stars
3 stars
2 stars
1 stars

Price:

$0 – $10
$10 – $20
$20 – $30
$30 – $40
$40 – $50
$50 – $75
$75 – $100
$100 +
Minimum price

$

to Maximum price

$

Apply custom price filter

Retired:

Show only retired

Apply filters:

Environment

Jump to Subcategory:

Magneto Pressure Seismograph Sound Temperature Weather

added to your cart!

Thermocouple Type-K - Stainless Steel

Out of stock SEN-13715

This is a stainless steel, Type-K Thermocouple probe. A thermocouple works by taking two wires made of dissimilar metals, con…

$4.95

Favorited Favorite 11

Wish List

added to your cart!

Reed Switch - Insulated

In stock COM-10601

This is a small device called a [reed switch](http://en.wikipedia.org/wiki/Reed_switch). When the device is exposed to a magn…

$1.95

Favorited Favorite 21

Wish List

added to your cart!

Hall-Effect Sensor - AH1815 (Non-Latching)

In stock SEN-14709

The AH1815 is an integrated Hall-Effect non-latched sensor.

$0.95

Favorited Favorite 9

Wish List

added to your cart!

SparkFun Barometric Pressure Sensor Breakout - MPL115A1

Only 7 left! SEN-09721

Now mounted on a breakout board, the MPL115A1 is a digital barometer that uses MEMs technology to give accurate pressure meas…

$13.95

Favorited Favorite 10

Wish List

added to your cart!

SparkFun HMC6343 Breakout

In stock SEN-12916

The HMC6343 is a fully integrated high end electronic compass module that can compute and give you a heading direction that�…

$154.95

Favorited Favorite 18

Wish List

added to your cart!

Thermistor 10K

In stock SEN-00250

10K thermistor with a negative temperature coefficient. Good choice for temp-sensing applications when you need a reliable NT…

$0.75

Favorited Favorite 15

Wish List

added to your cart!

LilyPad Temperature Sensor

Out of stock DEV-08777

The MCP9700 is a small thermistor type temperature sensor. LilyPad is a wearable e-textile technology developed cooperatively…

$4.50

Favorited Favorite 18

Wish List

added to your cart!

Hall-Effect Sensor - US1881 (Latching)

In stock COM-09312

The US1881 is an integrated Hall-Effect latched sensor.

$0.95

Favorited Favorite 28

Wish List

added to your cart!

Zio Qwiic Loudness Sensor

23 available SEN-15892

The Zio Qwiic Loudness Sensor is an I²C device making it easy to measure the noise level in your next project.

$9.95

Favorited Favorite 6

Wish List

added to your cart!

Non-Contact Infrared Thermometer

In stock TOL-10830

This non-contact infrared thermometer makes it a breeze to take quick and accurate surface temperature readings without getti…

$27.95

Favorited Favorite 17

Wish List

added to your cart!

Pressure Sensor (Qwiic) - MS5637

In stock SPX-14688

MEMs based barometric pressure sensors are quite common these days. The Qwiic Pressure Sensor with the MS5637 shines by being…

$6.95

Favorited Favorite 6

Wish List

added to your cart!

SparkFun Photon Weather Shield

28 available DEV-13674

The SparkFun Photon Weather Shield is an easy-to-use add-on board that grants you access to barometric pressure, relative hum…

$19.95

Favorited Favorite 13

Wish List

added to your cart!

One Wire Digital Temperature Sensor - DS18B20

In stock SEN-00245

This is the latest DS18B20 1-Wire digital temperature sensor from Maxim IC. Reports degrees C with 9 to 12-bit precision, -55…

$3.95

Favorited Favorite 18

Wish List

added to your cart!

Qwiic Pressure Sensor - LPS25HB

In stock SPX-14767

The LPS25HB is an absolute pressure sensor which means that it has an internal vacuum as a reference. (As opposed to *differe…

$9.95

Favorited Favorite 5

Wish List

added to your cart!

SparkFun gator:environment - micro:bit Accessory Board

In stock SEN-15269

The SparkFun gator:environment utilizes the CCS811 and BME280 ICs to take care of all of your environmental readings of atmos…

$19.95

Favorited Favorite 3

Wish List

added to your cart!

One-Wire Ambient Temperature Sensor - MAX31820

In stock SEN-14049

The MAX31820 ambient temperature sensor provides 9-bit to 12-bit Celsius temperature measurements with ±0.5°C accuracy over…

$1.95

Favorited Favorite 14

Wish List

added to your cart!

LilyPad Reed Switch

Only 7 left! DEV-13343

The LilyPad Reed Switch is a simple breakout for a reed switch that will make it easy to use in e-textiles circuits in exactl…

$3.50

Favorited Favorite 17

Wish List

added to your cart!

Reed Switch

In stock COM-08642

This is a small device called a [reed switch](http://en.wikipedia.org/wiki/Reed_switch). When the device is exposed to a magn…

$1.95

Favorited Favorite 19

Wish List

SparkFun Lightning Detector - AS3935 (Ding & Dent)

Out of stock DD-15757

The SparkFun Lightning Detector adds lightning detection to your next weather station to make sure you are aware of any bad w…

Favorited Favorite 5

Wish List

added to your cart!

Electret Microphone

In stock COM-08635

Small electret microphone. Useful in acoustic and audio applications.

$0.95

Favorited Favorite 21

Wish List

added to your cart!

Coral Environmental Sensor Board

In stock SEN-15889

An accessory board that provides temperature, light, and humidity sensing for IoT applications.

$16.95

Favorited Favorite 0

Wish List

added to your cart!

SparkFun gator:microphone - micro:bit Accessory Board

In stock SEN-15289

The SparkFun gator:microphone is a micro:bit Accessory Board that integrates a microphone into SparkFun's gator:bit series of…

$6.95

Favorited Favorite 2

Wish List

added to your cart!

SparkFun gator:starter ProtoSnap

In stock SEN-14891

The gator:starter ProtoSnap has been designed to provide you with a staring point to go beyond the capabilities of the SparkF…

$9.95

Favorited Favorite 3

Wish List

added to your cart!

Vernier Sensor - Gas Pressure Sensor

Only 3 left! SEN-12874

This is the Vernier Gas Pressure Sensor, an easy to operate tool that can be used to monitor pressure changes of a gaseous el…

$82.95

Favorited Favorite 3

Wish List

added to your cart!

SparkFun gator:control ProtoSnap

Only 7 left! COM-14968

The gator:control ProtoSnap provides you with a handful of different ways to interact with projects you create using only gat…

$9.95

Favorited Favorite 4

Wish List

added to your cart!

MEMS Microphone - INMP401 (ADMP401)

32 available COM-10028

The ADMP401 is a high quality, low cost analog output bottom ported omnidirectional MEMS microphone. That was a mouthful! A w…

$3.95

Favorited Favorite 5

Wish List

added to your cart!

Barometric Pressure Sensor - MPL115A1

Only 13 left! SEN-09602

The MPL115A1 is a digital barometer that uses MEMs technology to give accurate pressure measurements between 50kPa and 115kPa…

$5.95

Favorited Favorite 9

Wish List

added to your cart!

Mikroe Pressure 10 Click

Only 9 left! DEV-17037

Mikroe Pressure 10 Click features the ALPS Electric HSPPAD042A digital interface barometric pressure sensor based on the piez…

$12.95

Favorited Favorite 0

Wish List

added to your cart!

Industrial Hydrogen Sulphide (H2S) Sensor - 200ppm

Only 2 left! SEN-16956

This is an Industrial Hydrogen Sulphide (H²S) Sensor with a measurement range of 0-200 ppm.

$66.95

Favorited Favorite 0

Wish List

added to your cart!

Industrial Chlorine (CL2) Sensor - 20ppm

Only 4 left! SEN-16959

This is an industrial chlorine (CL2) sensor with a measurement range of 20ppm.

$114.95

Favorited Favorite 0

Wish List

added to your cart!

Self-Adhering Surface Temperature Sensors

In stock SEN-15767

Thermometrics Self-Adhering Surface Temperature Sensors are designed for industrial HVACR applications, typically for placeme…

$5.95

Favorited Favorite 1

Wish List

added to your cart!

Mikroe Thermostat 4 Click

Only 4 left! SEN-17191

Mikroe Thermostat 4 Click senses temperature of a physical system and performs actions so the system's temperature is maintai…

$15.95

Favorited Favorite 0

Wish List

added to your cart!

Industrial Sulfur Dioxide (SO2) Sensor - 100ppm

Only 4 left! SEN-16960

This is an industrial sulfur dioxide (SO2) sensor with a measurement range of 100ppm.

$114.95

Favorited Favorite 0

Wish List

added to your cart!

Mikroe Surface Temp Click

Only 4 left! SEN-17183

Mikroe Surface Temp Click is a high accuracy digital temperature sensor with breakthrough performance over a wide industrial …

$19.95

Favorited Favorite 0

Wish List

Industrial Nitric Oxide (NO) Sensor - 100ppm

Out of stock SEN-16961

This is an industrial nitric oxide (NO) sensor with a measurement range of 100ppm.

Favorited Favorite 0

Wish List

added to your cart!

Industrial Ammonia (NH3) Sensor - 100ppm

Only 3 left! SEN-16962

This is an industrial ammonia (NH3) sensor with a measurement range of 100ppm.

$115.95

Favorited Favorite 0

Wish List

added to your cart!

Industrial Ammonia (NH3) Sensor - 1000ppm

Only 4 left! SEN-16963

This is an industrial ammonia (NH3) sensor with a measurement range of 1000ppm.

$115.95

Favorited Favorite 0

Wish List

added to your cart!

MiCS-5914 Compact Air Quality Sensor

In stock SEN-16748

This sensor offers short lead-times and is suitable for air quality monitoring, gas leak detection, pollution detection among…

$12.95

Favorited Favorite 1

Wish List

added to your cart!

Industrial Ethylene Oxide Sensor - 20ppm

Only 4 left! SEN-16964

This is an industrial ethylene oxide sensor with a measurement range of 20ppm.

$117.95

Favorited Favorite 0

Wish List

Industrial Oxygen Sensor

Out of stock SEN-16965

This is an industrial oxygen (O2) sensor with a range of 0-25%.

Favorited Favorite 0

Wish List

added to your cart!

Industrial Carbon Monoxide Sensor

Only 1 left! SEN-16966

This is an industrial carbon monoxide sensor with a range of 0-1,000ppm.

$66.95

Favorited Favorite 0

Wish List

added to your cart!

Pimoroni Air Quality Sensor Breakout

26 available DEV-16651

Measure indoor air quality—total volatile organic compounds (TVOC) and equivalent CO2 (eCO2)—with this digital sensor for…

$19.95

Favorited Favorite 0

Wish List

added to your cart!

Pycom Pysense 2.0 X

In stock WRL-17130

Pysense 2.0 X is a 2nd Generation sensor shield which can be used with any Pycom multi-network modules.

$31.95

Favorited Favorite 0

Wish List

added to your cart!

Industrial Nitrogen Dioxide (NO2) Sensor - 20ppm

Only 4 left! SEN-16958

This is an industrial nitrogen dioxide (NO2) sensor with a measurement range of 20ppm.

$100.95

Favorited Favorite 0

Wish List

added to your cart!

Four Channel Pyroelectric Sensor - Exhaust Environmental

Only 5 left! SEN-16972

Infrared Detectors Quad Channel Sensor; Filters: CO2 (carbon dioxide) (4.26um/180nm); CO (carbon monoxide) (4.64um/180nm); CH…

$321.95

Favorited Favorite 0

Wish List

added to your cart!

Mikroe Ammonia Click

Only 4 left! SEN-17184

Mikroe Ammonia Click is based on the MQ-137 gas sensor with a sensitive layer made of SnO2, which changes its resistance when…

$57.95

Favorited Favorite 0

Wish List

added to your cart!

Infrared Detector for HC, CO, CO2

Only 5 left! SEN-16973

Infrared Detectors Quad channel sensor for HC (hydrocarbon), CO (carbon monoxide) and CO2 (carbon dioxide).

$321.95

Favorited Favorite 0

Wish List

added to your cart!

MiCS-4514 Compact Air Quality Sensor

Only 13 left! SEN-16747

This sensor offers short lead-times and is suitable for air quality monitoring, gas leak detection, pollution detection among…

$11.95

Favorited Favorite 1

Wish List

Weekly product releases, special offers, and more.

YouTube
Instagram
GitHub
Facebook
Twitter
RSS

ABOUT SPARKFUN

Read Our Story
Press & Media
Success with SparkFun
SparkFun Education
Job Openings

PARTNER WITH US

See Our Partners
Become a Distributor/Reseller
Receive Volume Discounts
Explore Services
Apply for a Hardware Donation

SUPPORT

Customer Support
Purchase Orders & Payment Terms
Technical Assistance
FAQs
Contact Us

SITE INFORMATION

Terms of Service
Privacy Policy
Compliance
Site Map

SparkFun Electronics ®
6333 Dry Creek Parkway, Niwot, Colorado 80503
Desktop Site

Your Account
Log In
Register

Log In

Questions? Feedback?Olark live chat software