GY-SHT40 Digital Temperature and Humidity Sensor – High Precision
₹211.22 incl. GST (₹179.00 + GST)
GY-SHT40 Digital Temperature and Humidity Sensor is a high-accuracy, low-power environmental sensor featuring ±0.2°C temperature accuracy, ±1.8% RH humidity accuracy, -40°C to 125°C temperature range, 0–100% RH measurement, and I2C communication. Its compact design makes it ideal for IoT, weather stations, HVAC, greenhouse monitoring, smart home, and Arduino/ESP32 projects.
GY-SHT40 Digital Temperature and Humidity Sensor – High Accuracy I2C Environmental Sensor
Product Description
The GY-SHT40 Digital Temperature and Humidity Sensor is a compact and high-accuracy environmental sensing module designed for monitoring temperature and relative humidity in electronic, industrial, IoT, and automation applications.
Based on the SHT40 sensor, the module provides accurate digital measurement of temperature and humidity, with humidity accuracy of ±1.8% RH and temperature accuracy of ±0.2°C. Its reliable sensing performance makes it suitable for applications where stable and precise environmental measurements are required.
The sensor supports a wide temperature measurement range of -40°C to 125°C and a relative humidity range of 0% to 100% RH. Its low-power operation and wide supply voltage range of 1.08V to 3.6V DC make it suitable for battery-powered IoT devices, portable electronics, and embedded monitoring systems.
The module communicates through a standard I2C digital interface, allowing easy connection with Arduino, ESP32, Raspberry Pi, STM32, and other compatible microcontrollers.
Features
- High-accuracy digital temperature and humidity sensor
- Based on SHT40 sensor technology
- Temperature accuracy up to ±0.2°C
- Humidity accuracy up to ±1.8% RH
- Temperature measurement range from -40°C to 125°C
- Humidity measurement range from 0% to 100% RH
- Digital I2C communication interface
- Wide operating voltage range of 1.08V to 3.6V DC
- Low-power operation
- Compact module design
- Suitable for battery-powered applications
- Easy integration with microcontrollers
- Ideal for IoT and environmental monitoring
- Suitable for industrial and consumer applications
Specifications
| Parameter | Specification |
|---|---|
| Product Type | Digital Temperature and Humidity Sensor |
| Model | SHT40 |
| Humidity Range | 0% – 100% RH |
| Temperature Range | -40°C – 125°C |
| Humidity Accuracy | ±1.8% RH |
| Temperature Accuracy | ±0.2°C |
| Operating Voltage | 1.08V – 3.6V DC |
| Output Interface | I2C |
| Dimensions | 12 × 10 × 3 mm |
| Sensor Type | Digital Temperature and Humidity Sensor |
Working Principle
The SHT40 detects environmental temperature and relative humidity using an integrated digital sensing element.
The sensor internally processes the measured environmental conditions and provides digital data through the I2C communication interface. A connected microcontroller can request temperature and humidity readings and use the data for monitoring, control, logging, or automation applications.
Because the sensor provides digital output, it can be directly integrated into suitable embedded systems without requiring an external analog signal-conditioning circuit.
Digital I2C Interface
The GY-SHT40 communicates using the I2C protocol, allowing it to share a digital communication bus with other compatible sensors and peripherals.
This makes it convenient to connect with:
- Arduino
- ESP32
- ESP8266
- Raspberry Pi
- STM32
- Other I2C-compatible microcontrollers
Low-Power Operation
The sensor is designed for low-power applications and operates from 1.08V to 3.6V DC. This makes it suitable for battery-powered IoT systems, portable devices, environmental data loggers, and remote monitoring equipment.
Its low-power characteristics help support applications where energy efficiency and long operating time are important.
Typical Application Scenarios
HVAC Systems
Suitable for monitoring temperature and humidity in heating, ventilation, and air-conditioning systems for smart environmental control.
Weather Stations
Can be used for collecting digital environmental data in indoor and outdoor weather monitoring systems.
Greenhouses
Useful for monitoring environmental conditions in agricultural and greenhouse applications where temperature and humidity affect plant growth.
Smart Home Devices
Suitable for smart home systems, air-quality monitors, climate controllers, and connected environmental sensing devices.
IoT Monitoring
Can be integrated into wireless sensor nodes and remote monitoring systems for continuous temperature and humidity measurement.
Applications
- HVAC systems
- Weather stations
- Greenhouse monitoring
- Smart home systems
- IoT environmental sensors
- Climate monitoring
- Air-quality monitoring systems
- Temperature logging
- Humidity monitoring
- Industrial automation
- Data acquisition systems
- Battery-powered sensors
- Portable electronics
- Arduino projects
- ESP32 projects
- Raspberry Pi projects
- STM32 projects
- Educational electronics
- Environmental monitoring
Package Includes
- 1 × GY-SHT40 Digital Temperature and Humidity Sensor
Product Disclaimer
Product images are shown for illustrative and representational purposes only. The actual module may vary slightly in PCB colour, component placement, connector arrangement, dimensions, or appearance depending on the manufacturing batch.
Arduino boards, ESP32 boards, Raspberry Pi boards, wires, cables, breadboards, and other accessories shown in product images are not included unless specifically mentioned in the package contents.
Sensor accuracy and performance may vary depending on operating conditions, environmental factors, installation, airflow, condensation, and measurement setup.
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Frequently Asked Questions
1. What is the GY-SHT40?
The GY-SHT40 is a digital temperature and humidity sensor module designed for accurate environmental monitoring.
2. What is the temperature measurement range?
The temperature range is -40°C to 125°C.
3. What is the humidity measurement range?
The humidity measurement range is 0% to 100% RH.
4. What is the temperature accuracy?
The specified temperature accuracy is ±0.2°C.
5. What is the humidity accuracy?
The specified humidity accuracy is ±1.8% RH.
6. What communication interface does it use?
The sensor uses a digital I2C interface.
7. What voltage does the sensor require?
The specified operating voltage is 1.08V to 3.6V DC.
8. Can I use this sensor with Arduino?
Yes. It can be connected to Arduino and other compatible microcontrollers through the I2C interface.
9. Can I use it with ESP32?
Yes. The sensor is suitable for ESP32 and other compatible 3.3V I2C systems.
10. Can it be used with Raspberry Pi?
Yes. It can be connected to compatible Raspberry Pi systems through I2C.
11. Is the sensor suitable for battery-powered projects?
Yes. Its low-power design and wide supply-voltage range make it suitable for battery-powered IoT and portable applications.
12. Can it be used in greenhouses?
Yes. It can be used to monitor temperature and humidity in greenhouse and agricultural environments.
13. Can it be used in HVAC systems?
Yes. The sensor is suitable for temperature and humidity monitoring in HVAC and climate-control systems.
14. What are the dimensions of the module?
The module measures approximately 12 × 10 × 3 mm.
15. Is the sensor waterproof?
No waterproof rating is specified in the provided product information. The module should therefore be protected from water and excessive moisture.Only logged in customers who have purchased this product may leave a review.
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