Parameters: 1)storage temperature: -40 to 125ºc 2)supply voltage: 3.8v 3)humidity operating range: 1-100%rh 4)temperature operating range: -40 to 125ºc 5)vdd to gnd:-0.3 to 3.6v 6)digital i/o pins (data/sck) to vdd:-0.3 to vdd+0.3v 7)-10 to +10 ma Features: (1)dfn type package (2)relative humidity and temperature digital output, i2c interface (3)fully calibrated (4)lead free sensor, reflow solderable (5)low power consumption (6)fast response time and very low temperature coefficient Isweek provide smoke, gas, humidity&temperature, uv, fluid or other kinds of sensors More details welcome to inquiry: skype:isweek_laura