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SHT20 SHT21 temperature and humidity sensor is a cost-effective family of products, the amount in the millions, and a wide range of applications. Such sensors are suitable for extremely cost-sensitive but pay attention to the quality of mass production of the industry. ? Features output: I2C digital / PWM, SDM output / analog voltage interface consumption: 3.2uW (8 level measurement, 1 times / sec) Relative humidity operating range:?? Humidity 0 - 100% Temperature Operating Range: Temperature -? 40 - + 125 ° C (-40 - + 257 ° F) when humidity maximum error relative humidity and temperature response?: