Introduction
The SHT4X is the 4th generation digital temperature and humidity sensor from Sensirion. In line with Sensirion’s industry-proven humidity and temperature sensors, the SHT40 offers consistent high accuracy within measuring range.
The SHT40 sensor covers a humidity measurement range of 0 to 100%RH and a temperature detection range of -40°C to 125°C with a typical accuracy of ±1.8%RH and ±0.2℃.
The internal variable power heater enables the device to work properly under extreme operating conditions like condensing environment.
The board supply voltage of 3.3V to 5V and an current consumption below 0.15mA in low power mode make the SHT40 perfectly suitable for mobile or wireless battery-driven applications. It is suitable for urban environment monitoring, intelligent buildings, industrial automation, smart home and other Internet of Things applications.
Features
- High Accuracy
- Low Power Comsumption
- Small Size
- Fast Response
Applications
- Intelligent Buidings and Furniture
- Weather Station
- Warehouses
- Animals and Plants Culture
- Animal Incubator
- Germinating Box for plant seed
Specification

- Operating Voltage: 3.3V-5V
- Operating Current: 0.45mA
- Communication Interface: I2C
- Response Time: 8s (tau63%)
- Humidity Measurement Range: 0~100%RH
- Humidity Measurement Accuracy: ±1.8%
- Temperature Measurement Range: -40~+125℃ (-40 to +275℉)
- Temperature Measurement Accuracy: ±0.2℃
- Dimension: 14×17mm/0.55×0.67”
- Mounting Hole Size: M2 (2mm)
- Mounting Hole Pitch: 10mm
Board Overview
NO. | Silkscreen | Function |
---|---|---|
1 | VCC | Positive Pole |
2 | GND | Negative Pole |
3 | SCL | I2C ClockLine |
4 | SDA | I2C Data Line |
Tutorial
Requirements
- Hardware
- DFRduino UNO R3 (or similar) x 1
- SHTC3 Digital Temperature and Humudity Sensor x 1#
- M-M/F-M/F-F Jumper wires
- Software
- Arduino IDE
- Download and install the SHT Library (About how to install the library?)
- API Functions
Connection Diagram
Sample Code - Read Data
Record program and read the current temperature and humidity data.
Expected Results
Open the serial port to display the current temperature and humidity data.
FAQ
For any questions, advice or cool ideas to share, please visit the DFRobot Forum.