Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Interface	I2C (IIC)
Operating Voltage	1.7V to 5.5V
Temperature Range	-40°C to +125°C
Humidity Range	0% to 100% RH
Temperature Accuracy	±0.2°C typical
Humidity Accuracy	±1.8% RH typical
Response Time	1 second (63%)
Package Type	DFN-8 Breakout Board
Compatibility	Replace SHT20, SHT30, SHT35
Application	HVAC, IoT, Weather Stations

6 reviews

Anonymous

Mar 27, 2026

Rating: 5/5

Reliable for greenhouse monitoring

Been running three of these in my automated greenhouse for two months. They handle the high humidity conditions perfectly without drifting. The breakout board makes wiring very easy.

Anonymous

Mar 25, 2026

Rating: 4/5

Solid performance, good value

Does exactly what it says. The precision is great for home automation. Would prefer if it came with header pins pre-soldered, but that's a minor inconvenience.

Anonymous

Mar 24, 2026

Rating: 5/5

Bulk order success

Bought 20 units for a student workshop. Every single one worked out of the box. Consistent quality and great documentation support made the integration smooth for beginners.

Anonymous

Mar 23, 2026

Rating: 5/5

Fast response time

Impressed by how quickly this reacts to changes in temperature compared to my old DHT22 sensors. Essential for applications requiring real-time data logging.

Anonymous

Mar 10, 2026

Rating: 5/5

Perfect upgrade from SHT30

Switched my weather station project from SHT30 to this SHT40 module. The accuracy is noticeably better, and the I2C communication is rock solid with my ESP32. Highly recommended for serious hobbyists.

Anonymous

Mar 05, 2026

Rating: 4/5

Great sensor, minor pin labeling issue

The sensor performance is excellent and matches the datasheet specs. Only giving 4 stars because the silk screen on the VCC pin was slightly faint on my unit, but once identified, it works flawlessly.

5 FAQ

Q: What is the difference between this and the SHT30?

A: The SHT40 offers improved long-term stability and slightly better accuracy in extreme temperatures compared to the SHT30. It also features a new heater function for condensation management.

Q: Is this module compatible with Arduino Uno?

A: Yes, the SHT40 module uses a standard I2C interface and operates at 3.3V or 5V, making it fully compatible with Arduino Uno. You just need to connect the SDA and SCL pins.

Q: Does this come with a library for Raspberry Pi?

A: We do not provide a proprietary library, but the SHT40 is supported by popular community libraries like Adafruit_CircuitPython_SHT4x and Sensirion's official GitHub repositories for Python.

Q: Can I use this outdoors without an enclosure?

A: While the sensor chip is robust, the breakout board itself is not waterproof. We strongly recommend using a breathable enclosure or IP65 housing to protect the electronics from direct rain and dust.

Q: What is the maximum cable length for the I2C connection?

A: For reliable I2C communication, keep the cable length under 30cm (12 inches). If you need longer distances, consider using an I2C extender or buffer chip to maintain signal integrity.

Explore your interests

STC32G12K128 STC8H8K64U Microcontroller Small System Core Board Development Board Emulator

$16.50

Youxin Electronics_STM32H743IIT6 Core Board System Board Learning Board STM32 Development Board

$118.00

Arduino DUE Development Board 32-bit ARM Controller A000062 Italian Official Original Import with Cable

$299.00

Ultrasonic Sensor HC-SR04 Ultrasonic Distance Measuring Module Bracket US015-025-026-100

$3.16

QLST IoT Module Weighing Sensor, 4G Wireless RS485 Communication, High-Precision 6-Digit Instrument Display

$58.00

High-Speed Yabo Smart Raspberry Pi 4B Motherboard Development Board Accessories RaspberryPi 2G/4G/8G RAM Py

$494.30

Magnetic Circular Counting Chips, Two-Sided Flip Coins for Elementary Math, Kindergarten Early Education, Ten-Frame Matrix, Addition/Subtraction within 10 & 20, Teaching Tools

$11.90

3-Wire/4-Wire Flame Sensor Module, Fire Source Detection with IR Receiver, Flame Detection and Alarm

$1.08

SANSI White Label Class A Glass Graduated Cylinder C18 Micro-Precision Demulsification Cylinder with Scale Measurement Includes Certificate Ground Joint Stopper Hexagonal Bottom Borosilicate Glass Lab Equipment

$3.68

EV2400 Battery Unlock Fuel Gauge Programmer MSP430 HPA500 Evaluation Module Interface Board SMBus

$323.00

Cube Three-View Teaching Aid with Grid - 3D Geometry Observation Tool for Grades 4-5 Math (2cm Cubic Blocks Set)

$15.10

OrangePi Orange Pi Zero3 Zero 3 Development Board Allwinner H618 Orange Pi

$228.00

Digital 38KHz Infrared Receiver Transmitter Head Sensor Module Electronic Building Blocks Robot Infrared Communication Remote Control

$2.29

12V Stable Version Light-Control Switch No-Light Sensing with Extension Cable Photoresistor Plus Relay Module

$49.20

STM32 Smart Car 51 Microcontroller Arduino Obstacle Avoidance Chassis Kit Mecanum Wheel Robot Car

$40.80

Tech Small Production Small Invention DIY Piano Electronic Keyboard Real Playable Science Small Handmade DIY Materials

$33.00

HX711 Pressure Sensor Module Electronic Scale Bracket Weighing DIY Scale Pan Tray Set 5/10/40kg200

$3.28

Transparent 3D Geometric Model Perspective Decomposition Graphic Teaching Aid, Complete Set for Elementary Grades 1-6 Math

$6.80

Thin Film Pressure Sensor Display, USB Rechargeable Flexible Resistive Pressure Digital Display Module, Wide Range Wireless

$20.00

E18-D80NK Infrared Photoelectric Switch Diffuse Reflection Obstacle Avoidance Sensor Module 3-80CM

$12.60

LAN8720 Module Network Module Ethernet Transceiver RMII Interface Development Board Xinwei Electronics

$7.85

STC15W408AS Core Board Minimum System Board 51 Microcontroller Development Board TTSOP20 Learning Board

$18.47

New Version MEGA2560 R3 Development Board, Improved MEGA2560 R3 with Sensor Expansion Board

$13.68

Gradient Visual Illusion Kit: Electric Rotating Assembly Toy for Maker DIY, Paintable Handmade Model

$8.72

51/AVR Microcontroller Core Development Board STC89C52RC/51MCU Experiment Board/ATMEGA32 Learning Board

$37.90

[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set

$15.00

5A Range Current Transformer Module Voltage Sensor Single-Phase AC Active Output Current Transmitter

$5.06

Foldable Clothes Drying Rack Floor Standing Home Balcony Bedroom Hanging Clothes Quilt Drying Artifact Outdoor Cooling Rod Indoor Drying Rack

$47.10

Hi-Link 24G Millimeter Wave Radar Human Presence Sensing Module Smart Sensor Non-Contact LD2410C

$9.90

RV1103 Miniature Linux Development Board: RISC-V Vision and AI with Ethernet Port

$53.10

For Arduino Development Board R3 Mainboard Microcontroller Module Kit Programming Learning Board Sensor Suite

$78.00

Xuefen Geometry Stamping and Tracing Set for Grades 1-2, 3D and 2D Ink Pads, Math Learning Tools, Cube and Cuboid Models

$4.51

Rubber Tire Toy 4WD Smart Car Wheels Car Model Robot Accessories (Suitable for 2mm Axle)

$0.50

AHT10 High-Precision Digital Temperature and Humidity Sensor Measurement Module I2C Communication Replaces sht20

$7.88

Digital 38KHz Infrared Receiver/Transmitter Head Sensor Module for Electronic Building Blocks Robots, Infrared Communication Remote Control

$2.80

51 MCU Minimum System STC89C52 DIP40 Through-Hole Smart Car Main Control Board Learning Experiment

$19.80

Outdoor Adventure Kids' Insect Observation Box with Magnifying Glass, Boys & Girls Toy for Exploration, Butterfly Catching and Fish Scooping Tools

$7.80

MPU-9255 9-Axis Attitude 3-Axis Electronic Compass Accelerometer Gyroscope Magnetic Field Sensor Module

$13.42

Freeze-Dried Chicken Treats for Dogs: Nutritious Weight-Gain Breast Meat Chunks for Puppies – Teeth Cleaning, Grain Mixing, Universal Use

$3.90

Ningbo Keli SQB Cantilever Beam Weighing Module Sensor 100kg 500kg 1t 2t 3 Ton Small Floor Scale Inductor

$48.00