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7Semi SHT45 Digital Relative Humidity and Temperature Sensor Breakout with I2C Interface and 1.27mm Pitch 4 Pin Connector for MCU Integration
The 7Semi SHT45 breakout board brings a high-accuracy digital humidity and temperature sensor to your microcontroller projects. It measures relative humidity with accuracy of up to +/-1.0 %RH and temperature with accuracy of up to +/-0.1 deg C. Data is read over a standard I2C interface, so it connects to most MCU boards with just two signal lines. The 1.27mm pitch connector keeps the board compact and easy to wire.
The SHT45 is built for low-power and long-term use. It draws an average of 0.4 uA at a 1 Hz measurement rate and just 80 nA when idle, which suits battery-powered devices. It stays fully functional in condensing environments, and its variable-power heater has three heating levels to help the sensor perform in demanding conditions. The sensor offers NIST traceability and covers 0 to 100 %RH and -40 to 125 deg C, making it well-suited to climate monitoring, industrial and IoT designs.
Key Features
- High Humidity Accuracy: Up to +/-1.0 %RH for dependable relative humidity readings.
- Precise Temperature Sensing: Up to +/-0.1 deg C accuracy across the operating range.
- I2C Digital Interface: Preconfigured I2C addresses allow simple integration with MCUs.
- Ultra-Low Power Use: 0.4 uA average current at 1 Hz and 80 nA idle current.
- Variable Power Heater: Three heating levels for operation in demanding environments.
- Condensation Tolerant: Fully functional in condensing environments.
- Wide Operating Range: 0 to 100 %RH and -40 to 125 deg C.
- NIST Traceability: Supports traceable and consistent measurement quality.
- Compact Breakout Design: 1.27mm pitch connector for easy MCU integration.
- 3.3V Supply: Works directly with 3.3V logic systems.
Applications
- Weather stations and environmental monitoring
- HVAC and building automation
- IoT sensor nodes and battery-powered data loggers
- Greenhouse, agriculture and cold-chain monitoring
- Industrial process and equipment monitoring
- Wearable and portable electronics
- Prototyping and educational projects with MCU boards
