Temperature & Humidity Sensor (SHT20)
Description
The Sensirion SHT20 series is commonly utilized for humidity and temperature sensing. Humidity is gauged with a capacitive sensor, and temperature with a band-gap sensor. The SHT2x sensors include a version 4 silicon chip, featuring an amplifier, A/D converter, OTP memory, and a digital interface. Encased in a plastic package that exposes the sensor area, they are shielded from external impacts, ensuring durability. Suitable for both high and low volume needs (SHT20 – Low cost, SHT21 – Standard, SHT25 – High Accuracy), these sensors are fully calibrated and provide digital output of the final measurements.
Measurement parameters for the Sensiron SHT20 sensor.
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Temperature range: -40 to 125 C(-40 to 257 F)
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Humidity range: 0 to 100 % RH
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Temperature accuracy: ± 0.5% C
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Humidity accuracy: ± 5% RH
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Interface: I2C
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Voltage range: 2.1 – 3.6 V
How to Connect
Only four pins are required for connection: one for VCC, one for GND, and two for the I2C communication data lines. The SDA and SCL should be connected directly to the corresponding SDA and SCL breakout pins on the Arduino headers.
the 4 pins on the module:
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VCC: Module power supply – connect to 3.3v pin on the yellow-coloured header.
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GND: Ground – connect to a ground pin on the yellow-coloured header.
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SDA: Serial Data Input/Output for the I2C protocol – connect to SDA socket on the yellow-coloured header.
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SCL: Serial Clock Input for I2C the protocol – connect to SCL socket on the yellow- coloured header
While the Arduino operates with 5V logic levels, the SHT-20 sensor board requires 3.3V. It is crucial to power the board from the 3.3V pin. Since I2C is an open-drain signal, it can function without electronic level shifters for signal conversion. In practice, the SHT-20’s 3.3V signals are sufficient to communicate with the Arduino and are within the device’s tolerance. However, this is not the recommended practice, and for permanent circuits, voltage-compatible I2C buses or level converters should be used. Nevertheless, this workaround has been stable enough for prototyping purposes with this device.
Package Include
1 x Temperature & Humidity Sensor(SHT20)
Temperature & Humidity Sensor Overview
The Sensirion SHT20 Temperature & Humidity Sensor is a compact, fully calibrated digital module designed to measure ambient temperature and relative humidity. With an integrated capacitive humidity sensor and band-gap temperature element, it delivers reliable environmental readings for embedded systems and data-logging applications.
Key Features of Temperature & Humidity Sensor
- Temperature range: -40 °C to 125 °C with ±0.5 °C accuracy
- Humidity range: 0 % to 100 % RH with ±5 % RH accuracy
- I2C digital interface for seamless integration (up to 400 kHz)
- Operates from 2.1 V to 3.6 V, ideal for battery-powered designs
- Fully calibrated, factory-tested silicon chip in robust plastic package
- Genuine product with fast shipping from Zbotic
Applications and Use Cases
- Home and office HVAC monitoring to optimize comfort and energy usage
- Greenhouse and agricultural environments for precise climate control
- Weather stations and environmental data loggers
- Server rooms and telecommunication racks to prevent overheating
- Portable air-quality meters and handheld diagnostic tools
- Industrial process control where humidity and temperature stability are critical
How to Use Temperature & Humidity Sensor
Connect the SHT20’s VCC to a 2.1–3.6 V supply, GND to system ground, and SDA/SCL lines to your microcontroller’s I2C bus (add pull-up resistors if needed). Use the standard I2C address (0x40) to send measurement commands, then read two bytes of temperature or humidity data. Convert the raw values using Sensirion’s formulas to obtain calibrated readings.
Why Buy from Zbotic?
- Genuine Products: All items sourced from authorized distributors
- Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
- Free Shipping: Free delivery on qualifying orders
- COD Available: Cash on Delivery, UPI, cards, net banking
- Technical Support: Expert help for setup and troubleshooting
- Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
What supply voltage is required for the SHT20?
The SHT20 operates from 2.1 V to 3.6 V DC. For stable readings, a 3.3 V supply is commonly used in microcontroller projects.
How do I read temperature and humidity from the sensor?
Communicate with the SHT20 over I2C at address 0x40. Send the “measure temperature” or “measure humidity” command, then read two data bytes and one checksum byte. Apply the conversion formulas in the datasheet for final values.
Do I need to calibrate the SHT20 before use?
No additional calibration is required. The SHT20 is factory calibrated and stored in OTP memory, guaranteeing accuracy of ±0.5 °C and ±5 % RH out of the box.
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Read More →Technical Specifications
| Model | SHT20 |
|---|---|
| SKU | AI6131 |
| Weight | 0.00104 kg |
| Availability | Out of Stock |
Applications & Use Cases
The Temperature & Humidity Sensor(SHT20) is a versatile temperature & humidity sensor used across a wide range of applications including weather stations, greenhouse monitoring, HVAC systems, cold chain logistics, and server room monitoring.
Common use cases:
- Building a home weather station with Arduino
- Monitoring greenhouse conditions via IoT
- Alerting when server room temperature exceeds threshold
This product is ideal for IoT developers, agricultural engineers, and home automation enthusiasts.
Technical Tip: DHT22 offers better accuracy than DHT11. For precision applications, use SHT31 or BME280. Ensure adequate ventilation around the sensor.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
Lokesh Ghosh (verified owner) –
Excellent sensitivity and range on this Temperature & Humidity Sensor. Works better than I expected.
Vishal Joshi (verified owner) –
Outstanding accuracy from this Temperature & Humidity Sensor. Compared with a professional instrument, readings match closely.
Tarun Dhawan –
This Temperature & Humidity Sensor is excellent for the price. My data logging project is working perfectly now.
Vivek Solanki (verified owner) –
Excellent Temperature & Humidity Sensor! Readings are accurate and consistent. Perfect for my project.
Chitra Chatterjee (verified owner) –
Very satisfied with this Temperature & Humidity Sensor. Library support is good and it’s easy to interface.
Tanmay Dubey (verified owner) –
Outstanding accuracy from this Temperature & Humidity Sensor. Compared with a professional instrument, readings match closely.
Amit Verma –
Good Temperature & Humidity Sensor. Works as described. Calibration needed some patience but results are good.
Yashwant Kohli (verified owner) –
Outstanding accuracy from this Temperature & Humidity Sensor. Compared with a professional instrument, readings match closely.
Eshan Bose (verified owner) –
Perfect Temperature & Humidity Sensor for my automation project. Integrates seamlessly with my microcontroller.
Rakesh Gill (verified owner) –
Perfect for my weather station. This Temperature & Humidity Sensor gives consistent readings day and night.
Tushar Luthra –
Perfect for my weather station. This Temperature & Humidity Sensor gives consistent readings day and night.
Tanvi Rajan (verified owner) –
Outstanding accuracy from this Temperature & Humidity Sensor. Compared with a professional instrument, readings match closely.
Lokesh Banerjee (verified owner) –
Great quality Temperature & Humidity Sensor. Calibrated it easily and the accuracy is impressive.
Zara Khurana (verified owner) –
Perfect Temperature & Humidity Sensor for my automation project. Integrates seamlessly with my microcontroller.
Uday Ghosh (verified owner) –
This Temperature & Humidity Sensor is a must-have for sensor projects. Plug and play with Arduino.
Vikram Tandon (verified owner) –
Good quality Temperature & Humidity Sensor. Some variation in readings but within acceptable range.
Darshan Khanna (verified owner) –
Good quality Temperature & Humidity Sensor. Some variation in readings but within acceptable range.
Saurabh Batra (verified owner) –
Great quality Temperature & Humidity Sensor. Calibrated it easily and the accuracy is impressive.
Vaishali Tandon (verified owner) –
Superb Temperature & Humidity Sensor! Using it in my environmental monitoring system. Very reliable data.
Uday Pillai (verified owner) –
Perfect for my weather station. This Temperature & Humidity Sensor gives consistent readings day and night.
Kavya Dave (verified owner) –
Great quality Temperature & Humidity Sensor. Calibrated it easily and the accuracy is impressive.
Tushar Pandey –
Okay Temperature & Humidity Sensor. Had to add a capacitor to stabilize readings. Works now.
Raj Menon (verified owner) –
Excellent Temperature & Humidity Sensor! Readings are accurate and consistent. Perfect for my project.
Zubin Mehta –
Excellent sensitivity and range on this Temperature & Humidity Sensor. Works better than I expected.
Sanya Choudhury (verified owner) –
This Temperature & Humidity Sensor is excellent for the price. My data logging project is working perfectly now.
Jai Chatterjee (verified owner) –
Great Temperature & Humidity Sensor. Using it in my smart agriculture system. Reliable measurements every time.
Diya Mittal –
Nice Temperature & Humidity Sensor. Readings are mostly accurate. Good enough for my hobby project.
Anjali Das (verified owner) –
Bought this Temperature & Humidity Sensor for my college project. Accurate readings, easy to code. Very happy!
Sarika Patil (verified owner) –
Love this Temperature & Humidity Sensor. Response time is fast and readings are stable.
Pooja Tiwari –
Love this Temperature & Humidity Sensor. Response time is fast and readings are stable.
Gauri Nair –
Perfect for my weather station. This Temperature & Humidity Sensor gives consistent readings day and night.
Krishna Ghosh –
This Temperature & Humidity Sensor works great with Arduino. Easy to wire up and code.