Adafruit Sensirion SHT40 Temperature Humidity Sensor - STEMMA QT / Qwiic [AF-4885]

Adafruit Sensirion SHT40 Temperature  Humidity Sensor - STEMMA QT / Qwiic

Adafruit Sensirion SHT40 Temperature Humidity Sensor - STEMMA QT / Qwiic [AF-4885]

Price: $11.00
Fastest delivery: Tuesday, 8th February
Order before 2pm Thursday, 27th January
Available with a lead time
(100 units can dispatch between Feb 07 to Feb 10)
Need more than 0 units?
🔒 Secure transaction
Ships from: Little Bird (SYD) → You
Ships from: Supplier → Little Bird (SYD) → You

Product Image Gallery

Photo of Adafruit Sensirion SHT40 Temperature  Humidity Sensor - STEMMA QT / Qwiic Photo of Adafruit Sensirion SHT40 Temperature  Humidity Sensor - STEMMA QT / Qwiic Photo of Adafruit Sensirion SHT40 Temperature  Humidity Sensor - STEMMA QT / Qwiic Photo of Adafruit Sensirion SHT40 Temperature  Humidity Sensor - STEMMA QT / Qwiic Photo of Adafruit Sensirion SHT40 Temperature  Humidity Sensor - STEMMA QT / Qwiic Photo of Adafruit Sensirion SHT40 Temperature  Humidity Sensor - STEMMA QT / Qwiic

Description

Sensirion Temperature/Humidity sensors are some of the finest & highest-accuracy devices you can get. And finally, we have some that have a true I2C interface for easy reading. The SHT40 sensor is the fourth generation (started at the SHT10 and worked its way up to the top!). The SHT40 has an excellent ±1.8% typical relative humidity accuracy from 25 to 75% and ±0.2 °C typical accuracy from 0 to 75 °C.

Unlike some earlier SHT sensors, this sensor has a true I2C interface for easy interfacing with only two wires (plus power and ground!). Thanks to the voltage regulator and level shifting circuitry we've included on the breakout It is also is 3V or 5V compliant, so you can power and communicate with it using any microcontroller or microcomputer.

Such a lovely chip - so we spun up a breakout board with the SHT4x and some supporting circuitry such as pullup resistors and capacitors. To make things even easier, we've included SparkFun Qwiic compatible STEMMA QT connectors for the I2C bus so you don't even need to solder! QT Cable is not included, but we have a variety in the shop. 

If you prefer working on a breadboard, each order comes with one fully assembled and tested PCB breakout and a small piece of header. You'll need to solder the header onto the PCB, but it's fairly easy and takes only a few minutes even for a beginner. 

We've written both Arduino and CircuitPython/Python library code for this chip, so you can use it with just about any microcontroller or single-board computer like Raspberry Pi.



SHT40 Specifications & Features

  • Relative humidity accuracy: up to ±1.8 %RH
  • Temperature accuracy: up to ±0.2 °C
  • Breakout supply voltage: 3.3 to 5V
  • Average bare sensor current: 0.4 μA (at meas. rate 1 Hz)
  • Idle bare sensor current: 80 nA
  • I2C fast mode plus, CRC checksum
  • Operating range: 0…100 %RH, -40…125 °C
  • Fully functional in condensing environment
  • Variable power heater
  • NIST traceability for sensor
  • JEDEC JESD47 qualification for sensor
  • Mature technology from global market leader Sensirion
  • I2C address 0x44

Adafruit Categories with Adafruit Sensirion SHT40 Temperature Humidity Sensor - STEMMA QT / Qwiic

CircuitPython USB Cables
Chevron pointing right
CircuitPython Sensors
Chevron pointing right
Sensors Solenoids
Chevron pointing right
Sensors Humidity
Chevron pointing right
Sensors Temperature
Chevron pointing right
STEMMA Touch
Chevron pointing right
STEMMA STEMMA QT
Chevron pointing right

Ask us about the Adafruit Sensirion SHT40 Temperature Humidity Sensor - STEMMA QT / Qwiic

Phone iconCall (1300 240 817)
Chevron pointing right
Email iconEmail (help@littlebird.com.au)
Chevron pointing right

Ordering more than 0?

We can get a further 100 units from Adafruit
Shipping: Adafruit (🌐) → Little Bird (SYD) → You
If you order more than 0 units your estimated delivery is: Monday, 7th February — Friday, 25th February.
This is an estimate only and delivery times vary.

Your transaction is secure

We work hard to protect your security and privacy. Our payments are based on Shopify which encrypts your information during transmission. We don't share your payment details with third-party sellers, or databrokers, and we don't sell your information to others.

© 2022 Little Bird Electronics Pty Ltd.
Made with ❤️ in SYD. All prices inc GST. ABN 15 634 521 449. We're 🐥 @lbhq on Twitter.