SHT41/SHT45 High-Precision Temp & Humidity Sensor Module
SHT41/SHT45 High-Precision Temp & Humidity Sensor Module
SHT41 / SHT45 Digital Temperature & Humidity Sensor Module
Take your environmental monitoring to the next level with this high-precision SHT41/SHT45 Temperature & Humidity Sensor Module. Whether you're building a smart home climate system, a lab data logger, an agricultural IoT setup, or a cold-chain logistics tracker, this compact sensor delivers remarkably accurate readings across a wide range of conditions. Made in Mainland China.
Key Features
- Plug-and-Play Connectivity: Compatible with STEMMA QT / Qwiic I2C connectors — no soldering required.
- Ultra-High Temperature Accuracy: ±0.2°C (SHT41) / ±0.1°C (SHT45) for trustworthy readings every time.
- Excellent Humidity Accuracy: ±1.6% RH (SHT41) / ±1.0% RH (SHT45).
- Broad Measurement Range: -40°C to +125°C temperature; 0% to 100% relative humidity.
- Low Power Consumption: SHT45 draws as little as 0.4 μA average current — ideal for battery-powered IoT projects.
- Anti-Condensation & Heater Self-Test: SHT45 includes optional onboard heater for anti-condensation and self-diagnostics.
- Superior Long-Term Stability: Engineered for consistent performance in demanding, continuous-use environments.
Specifications
SHT41
- Temperature Range: -40°C to +125°C
- Humidity Range: 0% to 100% RH
- Temperature Accuracy: ±0.2°C (0°C–65°C)
- Humidity Accuracy: ±1.6% RH (20%–80% RH)
- Supply Voltage: 1.08V–3.6V
- Interface: STEMMA QT / Qwiic (I2C Address: 0x44)
- Module Size: 25mm × 17.5mm × 5mm
SHT45
- Temperature Range: -40°C to +125°C
- Humidity Range: 0% to 100% RH
- Temperature Accuracy: ±0.1°C
- Humidity Accuracy: ±1.0% RH
- Supply Voltage: 3.3V–5V
- Interface: I2C (Fixed Address: 0x44)
- Average Current: 0.4 μA
- Idle Current: 80 nA
- Module Size: 25.3mm × 17.8mm × 4.8mm
Applications
- Smart home climate control and HVAC monitoring
- Laboratory environmental data logging
- Agricultural and greenhouse IoT monitoring
- Cold-chain logistics temperature & humidity tracking
- Industrial process monitoring
- Weather station projects
What's in the Box
- 1× SHT41 or SHT45 Temperature & Humidity Sensor Module
- 1× Pin header
Note: Due to screen and lighting differences, the item's color may vary slightly from the photos. Please allow ±1mm–1cm tolerances due to manual measurement.
For technical guidance on environmental sensor calibration and data quality, visit the NIST Environmental Measurements resource.
Frequently Asked Questions
Q: What is the difference between the SHT41 and SHT45 temperature humidity sensor modules?
A: The SHT45 offers higher accuracy (±0.1°C temperature, ±1.0% RH humidity) compared to the SHT41 (±0.2°C temperature, ±1.6% RH humidity). The SHT45 also supports a wider supply voltage range (3.3V–5V), features an optional onboard heater for anti-condensation and self-testing, and achieves an ultra-low idle current of 80 nA — making it better suited for precision and battery-powered applications.
Q: Do I need to solder the SHT41/SHT45 sensor module to use it?
A: No soldering is required if you use a STEMMA QT or Qwiic cable — simply plug it into any compatible microcontroller board (such as Arduino, Raspberry Pi, or Adafruit boards). A pin header is also included in the package for breadboard or direct-wire connections.
Q: What projects or systems are these temperature humidity sensor modules best suited for?
A: These modules are ideal for smart home climate control, laboratory and industrial data logging, agricultural greenhouse monitoring, cold-chain logistics, IoT environmental sensing, and any application that demands precise, reliable temperature and humidity measurements over a -40°C to +125°C range.
Q: What I2C address does the SHT41/SHT45 module use?
A: Both the SHT41 and SHT45 modules use a fixed I2C address of 0x44, making integration into standard I2C device chains straightforward and compatible with most microcontroller libraries.