With this shield with the BMP180 sensor the D1-Mini can be expanded to include a measurement option for temperature and humidity. • I2C interface • Air pressure measuring range: 300 -1200 hPa • Temperature measuring range: -40 - +85°C • Accuracy (or ±0.05 m) (high-precision mode) • Relative accuracy: ± 0.06 hPa (or ± 0.5 m) • Absolute accuracy: ± 1 hPa (or ±8 m) • Temperature accuracy: ±0.5°C Pin assignment • 5 V: 5-V power supply • D1: SCL • D2: SDA • GND: Earth Note: Delivery includes 6 pin headers (2x 8-pin male–male, male–female, male long pin–female)