Supply voltage: 1.5V ~ 3.V Humidity measurement range: 0-100 RH Temperature measurement range: -40 ~ 105 The maximum power consumption: 2.7uW Communication: I2C Humidity accuracy range (10 RH to 95 RH): HTU21D ± 2 RH Humidity hysteresis: ± 1 RH Measurement time: 50ms Annual drift: -0.5 RH year Response time: 5 s Illumination range: 0-5535 lx Does not distinguish between ambient light sources Close to the visual sensitivity of the spectral characteristics It is possible to perform high-precision measurement of 1 lux in a wide range of luminance