Adafruit SHT41 Trinkey USB Temperature and Humidity Sensor

The Adafruit SHT41 Trinkey is a compact USB temperature and humidity sensor designed to easily connect to any computer or laptop with a USB A port. Featuring the highly accurate Sensirion SHT41 sensor, it provides precise environmental measurements with ±1.8% relative humidity accuracy and ±0.2°C temperature accuracy. This device includes an ATSAMD21 32-bit Cortex M0+ microcontroller supporting CircuitPython and Arduino, a NeoPixel LED, a capacitive touchpad, and a reset button for bootloader mode.

Key benefits:

• Simple plug-and-play USB design requiring no additional wiring, soldering, or drivers
• Pre-programmed to output temperature, humidity, touch sensor, and unique serial number over USB serial COM port in CSV format
• Compatibility with Arduino IDE and CircuitPython libraries for easy development
• Compact and durable for portable or keychain use

Perfect for quick environmental monitoring and integration into various projects.

Features

• ATSAMD21E18 Cortex M0+ 32-bit processor at 48 MHz with 256KB Flash and 32KB RAM
• Native USB support for serial console, MIDI, HID keyboard/mouse, and file storage
• NeoPixel RGB LED and capacitive touchpad inputs
• Highly accurate Sensirion SHT41 Temperature + Humidity sensor
• Thermal isolation cutout for sensor accuracy
• Reset button for restarting code or entering bootloader mode
• Slim, keychain-friendly form factor

Technical Specifications

• SHT41 Sensor Accuracy: ±1.8% RH typical (relative humidity), ±0.2°C typical (temperature)
• Supply Voltage: 3.3V to 5V
• Sensor Idle Current: 80 nA; Average Meas. current: 0.4 µA at 1 Hz
• Operating Range: 0 to 100% RH; -40 to 125 °C
• I2C Address: 0x44
• Dimensions: 31.8 mm × 11.8 mm × 4.5 mm
• Weight: 1.6 g
• Compliance: RoHS 2 2011/65/EU, RoHS 2 2015/863/EU