SHT20 I2C Humidity and Temperature Sensor Probe (Plastic) -7Semi

📌 What Is the SHT20 Sensor?
The SHT20 is a digital temperature and relative humidity sensor based on a high‑precision CMOSens® chip from Sensirion. It combines a capacitive humidity sensor and a band-gap temperature sensor with integrated circuitry for signal processing, calibration, and linearization — giving reliable digital readings via I²C.
🔍 Key Technical Specifications
Humidity measurement range: 0 % to 100 % RH
Humidity accuracy: ±3 % RH typical
Temperature range: −40 °C to +125 °C
Temperature accuracy: ±0.3 °C typical
Interface: I²C digital output (standard address 0x40)
Supply voltage: 2.1 V to 3.6 V
Low power consumption: suitable for battery-powered systems
The sensor is factory-calibrated and linearized, meaning you get accurate temperature and humidity values right out of the box.
🌡️ Probe Version Features
The 7Semi plastic probe adds:
Protective plastic housing for safe usage in indoor/outdoor environments
~1 m cable for flexible placement
Built-in pull-up resistors and filter capacitors for easy microcontroller interfacing
This makes it practical for applications like weather monitoring, smart homes, HVAC, or industrial environments.
🔌 Communication
The sensor uses the I²C protocol:
SDA: serial data
SCL: serial clock
VCC & GND: power supply
Multiple I²C sensors can share the same bus as long as they have unique addresses.
🛠 Typical Uses
Weather and environment monitoring
HVAC and air quality control
Smart home IoT projects
Greenhouse and agriculture automation
Industrial process control
Research and educational labs
🔧 Typical Microcontroller Setup
Wiring Example (Arduino / ESP32 / Raspberry Pi):
Connect VCC to 3.3 V (or 5 V if supported)
Connect GND to ground
Connect SDA to microcontroller SDA pin
Connect SCL to microcontroller SCL pin
Use an I²C library to read sensor data (e.g., Wire.h for Arduino, smbus for Raspberry Pi)
This lets you read humidity and temperature with just a few lines of code.
✅ Summary: The 7Semi SHT20 probe is a ready-to-use digital temperature + humidity sensor with I²C interface, offering high accuracy, low power, and simple integration into microcontroller projects.