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5PCS Digital Temperature and Humidity Sensor Module SHT30 SHT31 SHT35 SHT40 SHT41 SHT45 1.8V–3.6V
5PCS Digital Temperature and Humidity Sensor Module SHT30 SHT31 SHT35 SHT40 SHT41 SHT45 1.8V–3.6V
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SHT30 / SHT31 / SHT35 / SHT40 / SHT41 / SHT45 Digital Temperature & Humidity Sensor Module — 5pcs, 1.8V–3.6V, I²C
A 5-piece pack of Sensirion SHTxx series digital temperature and humidity sensor modules, available in SHT30, SHT31, SHT35, SHT40, SHT41, and SHT45 variants. The SHTxx series represents Sensirion’s industry-leading digital humidity and temperature sensors, offering high accuracy, low power consumption, and I²C interface for easy integration with Arduino, ESP32, Raspberry Pi, and STM32 microcontrollers. The module PCB includes decoupling capacitors and pull-up resistors for direct connection to microcontroller I²C pins.
SHTxx Series Comparison
| Model | Humidity Accuracy | Temperature Accuracy | Notes |
|---|---|---|---|
| SHT30 | ±2% RH | ±0.2°C | Entry-level, good accuracy |
| SHT31 | ±2% RH | ±0.2°C | SHT30 + alert mode |
| SHT35 | ±1.5% RH | ±0.1°C | High accuracy variant |
| SHT40 | ±1.8% RH | ±0.2°C | Next-gen, ultra-low power |
| SHT41 | ±1.8% RH | ±0.2°C | SHT40 + heater |
| SHT45 | ±1% RH | ±0.1°C | Highest accuracy in series |
Technical Specifications (SHT30 reference)
| Parameter | Value |
|---|---|
| Interface | I²C (up to 1MHz) |
| Supply Voltage | 1.8V – 3.6V DC |
| Current (measuring) | ~1.5mA |
| Current (idle) | ~0.2µA (ultra-low power) |
| Temperature Range | −40°C to +125°C |
| Humidity Range | 0–100% RH |
| Response Time | <8 seconds (63% step response) |
| I²C Address | 0x44 (default) / 0x45 (ADDR pin high) |
| Pack Quantity | 5pcs |
| Certification | RoHS |
Arduino Wiring
| Module Pin | Arduino Connection |
|---|---|
| VCC | 3.3V (use 3.3V, not 5V) |
| GND | GND |
| SDA | A4 (Arduino Uno) / SDA pin |
| SCL | A5 (Arduino Uno) / SCL pin |
Typical Applications
- IoT Environmental Monitoring: High-accuracy temperature and humidity sensor node for Home Assistant, AWS IoT, and Azure IoT Hub environmental monitoring systems
- Weather Station: Precision temperature and humidity measurement for DIY indoor and outdoor weather station projects
- HVAC Control: High-accuracy humidity and temperature feedback sensor for HVAC, dehumidifier, and humidifier control systems
- Pharmaceutical Storage: Temperature and humidity monitoring for pharmaceutical, food, and chemical storage compliance monitoring
- Greenhouse Automation: Precision environmental monitoring for greenhouse, grow tent, and hydroponic climate control systems
- Wearable Electronics: Ultra-low power SHT40/SHT45 for wearable environmental monitoring devices requiring minimal battery drain
FAQ
Q: What Arduino library should I use for SHTxx sensors?
A: Install the SHTxx library by Sensirion or the Adafruit SHT31 library via Arduino Library Manager. For SHT40/SHT45, use the Adafruit SHT4x library.
Q: Can I use SHTxx sensors at 5V?
A: No. The SHTxx series is rated for 1.8V–3.6V supply voltage. Use a 3.3V supply and a level shifter for I²C if connecting to a 5V Arduino. The module version may include a 3.3V regulator — check the module schematic.
Package Contents
- 5 × SHTxx digital temperature and humidity sensor module (variant as selected)
