This SparkFun breakout board houses the Honeywell's HIH-4030 humidity sensor. The HIH-4030 measures relative humidity (%RH) and delivers it as an analog output voltage.
Need to measure humidity? It's simple with the Honeywell HIH-4030 breakout board by SparkFun. We've seen this project used in a local science fair project (green house monitor), and it works brilliantly at good value.
Connect the sensor output directly to an ADC on a microcontroller and scale the near-linear analog voltage to the humidity scale. That's it!
Voltage applied to the supply pins should be within 4-5.8VDC, and optimally at 5V. The sensor will typically only consume about 200μA.
This product comes as shown in the picture, with the HIH-4030 soldered onto the breakout board. The pins of the 3-pin header are spaced by 0.1".
Dimensions: 0.75 x 0.30 " (19.05 x 7.62 mm)