Onboard voltage level translator, compatible with 3.3V/5V operating voltage Supports I2C (default), configurable slave address, supports SPI, switch to SPI via I/O setting Humidity sensing: 0~100%RH (resolution 0.008%RH, accuracy 3%RH, response time 1s, delay 2%RH) Temperature sensing: -40~85 Celsius (resolution 0.01 Celsius, accuracy 1C),barometric pressure sensing: 300~1100 (resolution 0.18Pa, accuracy 1hPa) Colour:blue Material:PCB Size:11.6 x 6 x 3.4cm Package Contents: 1 * Environmental Sensor Module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.