The humidity and temperature sensor board features a digital SHT21 sensor from Sensirion. The SHT21 uses capacitive sensor elements to measure humidity, and a band gap sensor for temperature measurement. Both sensors are integrated with a 14-bit ADC, delivering digital output through the I2C interface. It has a 4-pin connector for direct connection to microcontroller boards. Supports bidirectional communication using the I2C protocol. The board is 5V tolerant, allowing safe operation with 5V microcontrollers on I/O pins. Color: Blue Material: Electronic components Size: Approximately 1.3 x 1 cm Package Contents: 5 x HTU21D Temperature & Humidity Sensor Note: The package includes only the items listed above. Other accessories are not included. Note: Slight color variations may occur due to lighting and display differences. Measurement error allowance is +/- 1-3 cm.